78% (2004)

76% (2021)

73% (2018)

74% (2010)

76% (2001)

62% (2008)

64% (2002)

70% (2016)

75% (1996)

74% (1999)

55% (1999)

57% (2024)

45% (2008)

44% (2009)

61% (1991)

0% (1970)

42% (1996)

66% (1993)

69% (2011)

0% (2000)