69% (2000)

56% (2008)

62% (1972)

50% (1995)

54% (1997)

65% (2001)

60% (2004)

51% (1996)

47% (1999)

68% (2006)

58% (2004)

67% (1992)

62% (1996)

57% (2005)

67% (1987)

70% (1997)

62% (2003)

58% (1998)

56% (2019)

62% (1993)