53% (1994)

68% (2003)

61% (2012)

68% (1993)

68% (1988)

73% (1990)

68% (1986)

76% (1986)

58% (2003)

77% (1986)

72% (1991)

57% (1991)

64% (1989)

66% (1983)

57% (1996)

66% (1986)

47% (2005)

59% (2015)

58% (2009)

76% (1991)