43% (2017)

53% (2014)

50% (2012)

42% (2010)

40% (2014)

57% (1987)

46% (2010)

49% (1987)

43% (1989)

56% (2012)

42% (1993)

45% (1986)

46% (1990)

37% (2015)

43% (2010)

42% (1984)

43% (1995)

41% (1991)

52% (2006)

45% (1995)