44% (2002)

27% (2004)

61% (1996)

63% (2003)

59% (2003)

40% (2002)

48% (2003)

42% (2000)

45% (1999)

57% (2002)

35% (2002)

38% (2003)

32% (2002)

85% (2008)

47% (2001)

47% (2002)

58% (2000)

54% (2004)

82% (2000)

0% (1970)