46% (1995)

36% (2005)

67% (2010)

52% (2008)

47% (1995)

53% (2005)

61% (2005)

70% (1996)

60% (2009)

37% (1997)

67% (1990)

58% (1996)

53% (2003)

41% (1998)

56% (2006)

60% (2010)

0% (1988)

50% (1995)

64% (2004)

60% (1991)