46% (1990)

49% (2008)

34% (2006)

54% (1992)

40% (2000)

55% (1994)

57% (1991)

51% (1994)

49% (1991)

46% (2010)

44% (2012)

37% (2009)

37% (2002)

40% (2013)

47% (1993)

47% (1993)

50% (1994)

43% (1990)

49% (2017)

43% (2011)