69% (1999)

72% (1996)

74% (1995)

51% (2000)

72% (1998)

44% (2009)

69% (1998)

58% (2000)

60% (1999)

52% (1996)

67% (1999)

58% (2001)

46% (2002)

50% (2004)

61% (2002)

48% (1995)

59% (2000)

53% (1999)

57% (1999)

80% (1930)