71% (1993)

55% (1989)

42% (2010)

74% (1990)

65% (2007)

60% (1979)

63% (2003)

61% (1983)

58% (2017)

47% (2011)

67% (1993)

65% (1986)

69% (2009)

72% (1979)

60% (1992)

71% (1996)

66% (1982)

58% (1988)

40% (1988)

71% (1988)