70% (1997)

66% (1993)

63% (2006)

71% (1993)

68% (1994)

72% (1995)

69% (1994)

69% (1996)

65% (1995)

71% (1997)

67% (2008)

79% (2019)

60% (1997)

58% (2001)

72% (1996)

66% (1994)

73% (1997)

68% (1996)

50% (1991)

20% (1990)