63% (2001)

70% (1989)

66% (1997)

60% (1994)

66% (1998)

65% (1995)

69% (1991)

69% (2014)

61% (2003)

67% (1989)

63% (2000)

60% (2007)

72% (2005)

63% (2008)

66% (1985)

72% (2003)

64% (1997)

44% (2000)

63% (1996)

68% (2018)