"So, do the majority of Catholic women follow the teachings of Humanae Vitae on contraceptive use? Available data show they do not. Their choice to disregard this teaching started well before the letter was released. Among American Catholic women, for example, as of 1955, 30 percent used artificial contraception. Ten years later, that number had reached 51 percent, all before the ban was reiterated in 1968. By 1970 the number of Catholic women in the U.S. using birth control hit 68 percent, and today there is almost no difference between the birth control practices of Catholics and non-Catholics in the United States. Globally, as of 2015, there is little difference between Catholic and non-Catholic regions. For example, the percentage of contraceptive use in heavily Catholic Latin America and the Caribbean was 72.7 percent, – a 36.9 percent increase since 1970 – compared to 74.8 percent in North America."