65% (1997)

68% (2000)

72% (2003)

71% (2006)

65% (2007)

75% (1999)

70% (2000)

65% (1999)

62% (2000)

59% (2006)

64% (2004)

61% (2004)

56% (2022)

68% (2005)

73% (1991)

56% (1994)

57% (2011)

57% (1998)

66% (2006)

57% (2000)