65% (2008)

71% (2001)

58% (2004)

0% (1984)

72% (2005)

70% (2006)

54% (2003)

60% (2007)

62% (2001)

57% (2008)

57% (2006)

62% (2000)

60% (1970)

59% (1999)

83% (1989)

67% (1995)

73% (2000)

77% (2008)

56% (2000)

100% (2011)