56% (2001)

47% (2016)

47% (2004)

51% (1986)

46% (2016)

40% (2002)

61% (1992)

59% (1991)

55% (1989)

49% (1987)

41% (2005)

51% (2007)

61% (1989)

49% (2015)

52% (1992)

44% (2008)

43% (2001)

41% (2011)

36% (2011)

50% (2017)