52% (2001)

56% (2018)

61% (2006)

56% (2009)

61% (2013)

56% (2006)

60% (1987)

62% (1985)

72% (1994)

58% (1999)

64% (2011)

65% (1992)

63% (2001)

55% (2007)

64% (2001)

58% (1998)

64% (1994)

60% (2009)

70% (2013)

64% (2020)