59% (2009)

54% (1991)

58% (2009)

20% (2008)

70% (2007)

40% (2006)

0% (2008)

48% (2007)

80% (1990)

0% (1999)

20% (2009)

0% (1998)

52% (2005)

59% (1996)

0% (1992)

50% (1991)

0% (1999)

0% (1995)

0% (1996)

53% (2001)