62% (2000)

61% (1995)

64% (2001)

54% (2010)

57% (1999)

58% (1997)

62% (2001)

52% (1994)

49% (1999)

59% (2008)

55% (2003)

58% (2000)

66% (1998)

59% (1999)

65% (1998)

67% (1996)

53% (2000)

66% (2002)

65% (2001)

66% (1995)