63% (1999)

63% (2013)

60% (2003)

51% (2009)

60% (1985)

71% (2001)

68% (2001)

66% (1998)

57% (1996)

67% (2000)

67% (1997)

46% (2001)

47% (2005)

67% (2002)

40% (1997)

48% (1998)

72% (1998)

50% (1998)

70% (2000)

41% (1999)