That's a great question, and it varies somewhat by community. I don't think there's a one-size-fits-all ratio. I can say, though, that the most inefficient way of raising money is through admission charges. Admission charges are costly to administer. They only bring in 10% to 12% of revenue, and they keep so many people away. That's very inefficient.
Corporate sponsorship is extremely efficient. More people coming in for free leads to more corporate sponsorship. Individual wealth is very efficient. It's about looking at each situation and finding the most efficient way to bring in that private money. The Canadian Museum for Human Rights is a good example, frankly, on the capital side, as is the fact that fundraising is important for them in an ongoing way.