66% (1998)

50% (2002)

59% (1997)

65% (1995)

52% (2000)

69% (2002)

69% (2002)

61% (2003)

59% (2001)

54% (2010)

64% (2004)

59% (1999)

52% (1994)

46% (1999)

68% (1994)

0% (1970)

46% (2002)

60% (1995)

67% (1996)

64% (1999)