55% (1999)

48% (2004)

62% (2001)

52% (1996)

56% (2017)

54% (1999)

58% (2007)

48% (1991)

48% (2010)

60% (2002)

50% (1988)

44% (1981)

52% (2013)

56% (2010)

0% (2017)

70% (2016)

50% (1979)

40% (1988)

60% (1960)