69% (1994)

56% (2007)

59% (2005)

68% (2002)

61% (2000)

52% (2004)

60% (2005)

58% (2009)

69% (2007)

100% (1981)

60% (2010)

68% (1998)

30% (2001)

54% (1995)

42% (2001)

0% (2007)

0% (1999)

60% (1994)

90% (1998)