62% (2005)

76% (2006)

67% (2014)

68% (2015)

65% (1999)

57% (1995)

57% (2005)

70% (1993)

68% (1994)

70% (2011)

65% (2010)

68% (2008)

64% (2003)

60% (1993)

62% (2002)

69% (1993)

40% (1997)

76% (1995)

67% (1997)

48% (2002)