47% (2003)

39% (2000)

54% (2013)

57% (2009)

49% (1998)

66% (2000)

61% (2004)

59% (2010)

42% (1994)

61% (1999)

51% (2005)

53% (2012)

51% (2014)

49% (1992)

63% (1988)

74% (2003)

76% (1991)

51% (1996)

63% (1998)

40% (2021)