After climbing through the 1990s, the number of abortions in Canada has fallen steadily to fewer than 100,000 a year, according to a new study that maps out in detail the first few decades of the countrys legalized-abortion era.The rate per capita has fallen 14% since 1997, with 97,000 surgeries in 2005, concluded the paper. The fastest decline has been among teenagers, while women in their 20s still account for about half of abortions.Despite the recent decline, close to a third of middle-aged women have terminated a pregnancy at least once. A second new study noted that almost 40% of Canadian abortions are performed on women who have had one before but it suggested that inserting IUDs right after the procedure might curb the number of repeat abortions.