47% (2010)

33% (2006)

51% (2007)

56% (2005)

42% (2003)

44% (2004)

54% (2001)

58% (1995)

49% (2006)

35% (2010)

42% (2008)

37% (1996)

46% (1999)

43% (2001)

45% (1996)

42% (2010)

49% (2003)

32% (1998)

0% (2005)

36% (2011)