74% (2007)

65% (1995)

49% (2006)

57% (2006)

48% (2005)

43% (1995)

56% (1997)

38% (2004)

62% (1999)

57% (1993)

49% (1995)

48% (2008)

38% (2008)

60% (1994)

56% (2002)

62% (1996)

49% (1994)

57% (1997)

51% (2011)

46% (1991)