20% (1982)

60% (2012)

30% (2004)

35% (2004)

25% (2001)

60% (1997)

53% (1970)

47% (2009)

35% (2004)

60% (1984)

20% (1990)

57% (2005)

10% (1990)

52% (1999)

100% (1990)

45% (1985)

20% (1996)

47% (2005)

42% (1976)

20% (1990)