32% (1998)

38% (1994)

28% (1988)

28% (1999)

44% (1999)

36% (2009)

38% (1997)

27% (2001)

39% (1993)

45% (1993)

46% (2007)

58% (2014)

35% (2005)

49% (1990)

51% (2001)

28% (2003)

59% (1998)

60% (2008)

39% (1997)

50% (2000)