46% (2003)

54% (2000)

58% (2003)

60% (2011)

47% (1999)

60% (2004)

69% (2011)

61% (2011)

54% (2005)

61% (1997)

20% (1996)

57% (2003)

66% (2012)

63% (2002)

64% (2006)

69% (2006)

68% (2008)

70% (2007)

54% (2006)

0% (1998)