58% (2003)

71% (2002)

69% (1998)

58% (1996)

65% (1992)

39% (2000)

46% (2001)

66% (2013)

54% (1994)

73% (2004)

49% (1993)

66% (1996)

54% (1992)

64% (2004)

65% (2003)

63% (1996)

60% (1999)

68% (1995)

55% (2002)

61% (1997)