68% (1988)

70% (1993)

61% (1998)

55% (2004)

64% (1990)

72% (2022)

58% (2017)

64% (1994)

72% (2003)

61% (2014)

66% (2000)

70% (2002)

67% (2006)

72% (1997)

55% (1984)

0% (1985)