About 39 million Americans ride at least six times a year, according to the National Sporting Goods Association.

CNN: January 19, 2013 -- Updated 0121 GMT (0921 HKT)

According to the National Sporting Goods Association, women's participation in shooting sports has surged by more than 50% for target shooting in the past decade and by more than 40% for hunting.

WSJ: Rhett Power: Pink Guns, but Not Cute

From 2000 to 2009, the latest year for which figures are available, the number of kids aged 7 to 17 playing baseball fell 24%, according to the National Sporting Goods Association, an industry trade group.

WSJ: As Baseball Season Beings, Kids Are Losing Interest in the National Pastime