68% (1995)

55% (1980)

66% (1986)

51% (1993)

38% (1996)

54% (1982)

72% (1990)

51% (1994)

10% (1996)

50% (1977)

42% (1993)

46% (1980)

30% (1995)

35% (1996)

30% (1981)

51% (2008)

66% (1984)

77% (1983)

59% (1992)

10% (1977)