58% (1992)

56% (2005)

51% (1990)

61% (2005)

68% (1992)

61% (1995)

77% (1979)

50% (2006)

53% (2000)

30% (2016)

76% (2001)

32% (2000)

60% (2001)

54% (1960)

71% (2015)

63% (1988)

79% (2009)

45% (1999)

60% (1997)

56% (2003)