63% (2009)

60% (2006)

55% (1997)

30% (2010)

30% (2006)

60% (2008)

62% (2004)

50% (2005)

50% (2005)

30% (2003)

42% (2010)

60% (2004)

30% (2008)

0% (1997)

70% (2002)

53% (2003)

60% (1995)

35% (2005)

0% (2003)

72% (1995)