63% (1988)

61% (1985)

39% (2001)

66% (1993)

54% (2010)

57% (1981)

62% (2012)

63% (1982)

64% (2011)

70% (2016)

60% (1987)

77% (2002)

43% (1964)

73% (2013)

62% (1998)

40% (1987)

77% (2005)

77% (2008)

48% (2003)

50% (1993)