57% (1987)

53% (2014)

43% (2017)

42% (1993)

50% (2012)

56% (2012)

71% (1994)

43% (1995)

41% (1991)

40% (2014)

40% (1992)

30% (1996)

37% (2015)

42% (2010)

57% (2014)

49% (1987)

43% (2010)

42% (1984)

44% (1986)

50% (1994)