I have couple of points.
First, when projections are made, from whatever source, about future trade flows and increases stemming from free trade agreements, the benefits often go beyond what's measurable in tariff reductions. The increased awareness and the overall buzz in the trading community, together with the increased information about the market and other intangibles, are contributing factors that often end up creating a result larger than might have been anticipated.
Second, with this particular agreement, the investment in negotiations was relatively small. The agreement was negotiated over three rounds, over a period of about six months, from February or March of 2008 until August 2008. It was about as quick a negotiation as could have been anticipated. So the investment was modest, and the benefits appear to be quite promising.