52% (1994)

57% (1991)

60% (1995)

45% (2000)

44% (1997)

45% (1991)

61% (1989)

62% (2003)

0% (1970)

77% (2007)

59% (1991)

61% (2005)

60% (1984)

67% (1990)

39% (2005)

47% (1992)

39% (1993)

47% (1984)

14% (1993)

44% (1989)