50% (1977)

10% (1985)

52% (2015)

36% (2016)

70% (2003)

88% (1990)

68% (2013)

62% (1989)

52% (1990)

73% (1991)

61% (1981)

63% (1970)

71% (2005)

61% (1997)

0% (1996)

50% (2003)

62% (1972)

51% (2020)

52% (1994)

50% (2023)