55% (2007)

66% (2005)

58% (2013)

68% (2003)

54% (2003)

50% (2001)

38% (2000)

31% (1998)

60% (2003)

48% (1999)

80% (1998)

64% (2001)

63% (2004)

61% (2000)

59% (1998)

53% (2002)

62% (2000)

61% (1998)

40% (2000)

57% (2005)