48% (2007)

60% (2009)

59% (2009)

47% (2001)

80% (1990)

58% (1996)

40% (2006)

53% (1996)

0% (1992)

20% (2008)

70% (2007)

0% (1995)

0% (1992)

0% (1999)

45% (1992)

0% (2008)

20% (2009)

51% (2005)

41% (2005)

46% (1991)