59% (2017)

53% (2002)

0% (1992)

65% (2004)

50% (1994)

0% (1988)

68% (1999)

67% (1993)

66% (1983)

0% (1970)

61% (1983)

47% (1996)

57% (1977)

0% (1983)

0% (1961)

60% (1995)

59% (1989)

58% (1979)

43% (2007)

42% (1986)