For the years 2005-09, 45 different leagues have had a player chosen by a NHL team. 1076 total picks have been made, and of that group, Canadian Hockey League players (major junior) comprise a little over 46% of the total selections. This in itself isn't surprising: Canadian players make up around half of the NHL players in the league as a whole, and with somewhere around 80% of all CHL players being Canadian, such an outcome is not surprising. Canadian trained players are also picked from the Junior A leagues (Canadian Junior A leagues and the United States Hockey League), as well as a couple from the NCAA. American players are more spread out, with the largest number picked from high school leagues in Minnesota and New England.
I'll have the per country breakdowns in the future, but here's a look at the raw totals by league after the jump: