0% (1994)

78% (2009)

53% (2004)

67% (1999)

72% (2020)

71% (1995)

68% (1994)

68% (2000)

68% (1988)

66% (1997)

68% (2003)

71% (2016)

68% (1981)

66% (2003)

71% (2018)

69% (1999)

56% (2006)

62% (1980)

67% (2009)

62% (2008)