61% (1985)

39% (2001)

40% (2003)

38% (2008)

80% (2015)

63% (1988)

78% (1994)

38% (1972)

33% (1989)

50% (1998)

51% (1976)

60% (2012)

90% (2020)

60% (1998)

77% (2002)

67% (2005)

54% (1989)

40% (1987)

63% (1982)

49% (2003)