46% (2007)

36% (2009)

53% (2001)

63% (1998)

38% (1994)

39% (1993)

30% (2001)

58% (2014)

53% (2009)

50% (1990)

38% (1997)

35% (2005)

60% (2008)

45% (1993)

45% (2005)

37% (1995)

55% (2009)

49% (2005)

50% (2000)

28% (1979)