66% (2011)

57% (2015)

65% (2008)

58% (2007)

51% (2011)

63% (2017)

58% (2006)

50% (2002)

52% (2001)

44% (1993)

43% (2005)

35% (2006)

46% (1997)

39% (2008)

42% (2003)

44% (1994)

41% (2005)

35% (1995)

24% (1995)

27% (1995)