1976: Rowing, basketball, handball

1980: Field hockey

1984: Shooting, cycling

1988: Tennis, table tennis, sailing

1992: Badminton, judo

1996: Soccer, softball (later removed)

2000: Weightlifting, pentathlon, taekwondo, triathlon

2004: Wrestling

2008: BMX

2012: Boxing

Except where noted, images are from or related to the 2012 Games. Source: www.olympic.org