78% (2004)

73% (2018)

76% (2021)

75% (2010)

55% (1999)

62% (2008)

70% (2016)

74% (1999)

64% (2002)

76% (2001)

45% (2008)

58% (2024)

76% (1996)

44% (2009)

61% (1991)

0% (1970)

69% (2011)

0% (1992)

60% (1995)

0% (2000)