55% (2015)

62% (1997)

47% (2001)

55% (1993)

60% (1994)

65% (1991)

57% (2011)

60% (2007)

62% (1996)

58% (1990)

63% (1992)

44% (1997)

57% (1999)

64% (1992)

51% (1996)

48% (1996)

56% (1993)

55% (1994)

62% (1989)

51% (2019)