78% (2009)

55% (2001)

67% (1999)

72% (2020)

71% (2016)

71% (1995)

68% (1981)

66% (2009)

66% (1997)

69% (1988)

68% (1999)

68% (2000)

73% (2001)

66% (1994)

53% (2004)

0% (1994)

57% (1996)

63% (2003)

59% (2002)

74% (2004)