60% (2003)

63% (1999)

50% (2009)

58% (1997)

66% (1998)

63% (2013)

71% (2001)

69% (2000)

57% (1996)

56% (2000)

41% (1999)

67% (2002)

47% (2005)

60% (1985)

50% (1998)

60% (1998)

68% (2001)

48% (1998)

67% (1997)

49% (1997)