57% (2018)

42% (2007)

56% (2011)

37% (1989)

41% (2009)

51% (1995)

62% (1997)

38% (1991)

48% (1998)

46% (1992)

43% (1987)

39% (2015)

60% (2000)

58% (1999)

32% (2017)

0% (1994)

37% (2011)

25% (2014)

55% (2016)

50% (2001)