62% (1998)

66% (1999)

69% (1986)

58% (2001)

72% (2010)

60% (2003)

75% (1994)

63% (1991)

65% (2005)

66% (1997)

65% (1998)

73% (2003)

63% (1997)

54% (2003)

69% (1987)

69% (1997)

65% (1999)

63% (1995)

58% (1996)

73% (2014)