67% (2003)

68% (2008)

62% (2004)

65% (2008)

57% (2013)

64% (2000)

67% (1996)

63% (2018)

66% (2008)

64% (2009)

61% (1994)

63% (2013)

65% (2021)

61% (1991)

71% (2005)

65% (2010)

56% (1999)

71% (2013)

68% (1984)

53% (1993)