61% (2009)

59% (2009)

80% (1990)

40% (2006)

70% (2007)

50% (1991)

48% (2007)

47% (2001)

41% (2005)

0% (1998)

53% (1996)

46% (1991)

20% (2008)

20% (2009)

0% (1999)

51% (2005)

58% (1996)

0% (1992)

20% (2006)

0% (1995)