43% (2003)

65% (2000)

65% (2004)

55% (1999)

70% (1995)

43% (2006)

51% (2006)

53% (2005)

59% (2010)

59% (1996)

70% (2009)

60% (2011)

60% (2001)

20% (2009)

58% (2002)

54% (1998)

59% (2011)

58% (1998)

58% (2004)

35% (1997)