64% (1999)

70% (2000)

60% (2002)

63% (2013)

49% (1997)

40% (1997)

41% (1999)

48% (1998)

80% (1983)

42% (2003)

50% (1999)

72% (1998)

50% (1998)

57% (1996)

71% (2001)

58% (1997)

60% (1985)

57% (1997)

58% (1997)

40% (1996)