45% (1986)

43% (1984)

50% (2012)

44% (2017)

57% (1987)

43% (2010)

49% (1987)

37% (2015)

56% (2012)

40% (2014)

41% (1993)

55% (2014)

43% (2010)

39% (1992)

46% (1990)

45% (2010)

45% (1995)

43% (1995)

50% (2008)

30% (1996)