65% (2002)

42% (1998)

48% (2005)

54% (2004)

65% (2001)

60% (1991)

36% (1997)

64% (1996)

43% (2005)

95% (1996)

65% (1996)

56% (1997)

60% (1994)

55% (1989)

33% (1992)

67% (2003)

57% (1997)

61% (2004)

55% (2002)

69% (2003)