I've been at the Conference Board, I have to confess, for a very long time. I'm in the forecasting business, if you like. It's a tough business, and people often criticize how we can get the next few quarters or the next year right, or how we can guess what the next economic scuttlebutt will be, based on tariffs or trade or whatever other issues. I would turn that around. When we start thinking about the longer term, about the demographics of the economy—what we call the supply side of the economy—that tends to be a lot more solid.
I remember when we started to do long-term forecasts all those years ago. One of the first issues that came up was that, in our models, our unemployment rate would start to go south and all of a sudden turn negative, which in fact can't happen, so we knew we had a problem. Since then, we have focused very much on issues around productivity and immigration, because of this looming baby-boom cohort exodus that is essentially going to drive down economic growth going forward.
The report that we will submit looked at what Canada would look like in a no-immigration assumption. We know that's impossible. Economists are always trying to imagine crazy, hypothetical scenarios. However, it allows us to look, in the baseline scenario, at the contribution of immigration to the economy and, in a higher immigration scenario, at how that changes and looks going forward.
I'll give you some highlights of what we found.
What's really timely is that we've just received, I think yesterday, the new immigration targets for the next three years. They align very much with our getting to the 1% immigration assumption scenario. Those targets are looking at getting to 350,000 by 2021, which is essentially what we have in this report. That's about 0.9% of the population. It's certainly a little higher than what we've had in the past. In the last 15 or 20 years, we've had in-migration at about 0.8% of the population. That's adding a little bit. We're heading toward 1%, but that's in a scenario, a background, where essentially the aging of the population is causing the natural rate, that is, births less deaths, to contribute less and less.
Currently, immigration contributes to about 70% of overall population growth. By the time we get to 2034, immigration will forcibly account for all of population growth. If you have immigration at 1%, there's also emigration, so you can think that we're going to be between 0.8% population growth and 1% population growth, depending on those numbers, but probably around 0.8% or 0.9%. That would be a slight decline, but it would be fairly stable population growth compared to what we've had in the past.
In our assumptions, we looked very carefully.... In fact, in those same targets, we've assumed that the share of economic versus family versus refugee stays about the same. Those shares are about 58%, 26%, 16%, in order. We've made those assumptions in our scenarios as well. We look very carefully, and we track. As immigrants come in, we know that they make a certain percentage less than the average wage in Canada in year one, year two, etc., depending on the class. We track that all the way through the immigration streams that we're adjusting over time. We've done a careful job there.
What that allows us to do, then, is look at these scenarios. For a set of economic indicators that may be of interest—for example GDP, which is essentially just income, as I'm sure you all know—we can look at indicators such as the number of workers to retirees—dependency ratios, if you will. We can look at one of the biggest challenges for Canada, which is health care costs as a share of revenues—which is obviously a provincial issue—and other indicators, such as GDP per capita, etc.
What are the challenges? Let me start with the health care challenge. I think what we see with the higher immigration assumption versus immigration as is—the status quo scenario—is that essentially we have health care costs now as about 35% of provincial government revenues, and no matter what, they're going to increase.
In a low immigration scenario, they would increase to about 43% of provincial government revenues. In a 1% immigration world, we could bring that down to about 39%. This is by the time we get to 2040, so this is a long-term perspective. These are important challenges because as you eat up more of this share, it leaves less ability to do other things with your revenues.
We think that in a 1% scenario, GDP would stay in line with recent history: that is, about 2% of the economy. Remember that our trend GDP used to grow closer to 3% just in the early 2000s, so this demographic change around the labour force is having a very important impact on our ability to grow revenues. We can't get away with that, no matter what, but we can dampen the effects by looking essentially at how immigration plays in that role.
I'll just give you a quick example. I talk to organizations and people in the private and public sector who are looking at the challenge around hiring. The challenge around hiring is a very high rate of retirement, and that's only going to continue to climb. We think all baby boomers are out of the workforce; that's absolutely not true. It's just the front-end boomers, a small cohort. In recent years, the retirement rate has increased from about 0.95% of the labour force to 1.2%. That means 170,000 retirees just a few years ago, in 2010, and today we're at 230,000 to 240,000 retirees. For organizations looking to grow their workforce, it's essentially about one for one: For every one net new person you add to your workforce, you also have to add an additional person to replace a retiree.
Here are some of the other ratios. The worker-to-retiree ratio currently in Canada is 3.6 workers per retiree. Again, no matter what, that is going to grow over the next decade and a half, but with a 1% immigration scenario we mitigate that to about 2.6 workers per retiree. We go from 3.6 to 2.6, rather than 3.6 to 2. That's just another statistic to give you a sense of how important these changes are.
There are a lot of details in the report, but also some important observations we've done in previous work. It's not just growth for the sake of growth; it's growth for these reasons that I've talked about. It's not just bringing in immigration in terms of numbers. It's also very important to ensure, as some of the prior testimony has indicated, that people have the ability to participate more fully in the workforce.
We know this is a problem. We've looked at some of those costs, and we think that things around credentialing alone cost the economy and the individuals—I'm macro, always thinking about the big picture, but obviously this is an advantage for both—around $13 billion to $17 billion a year.