60% (1996)

62% (1999)

60% (2002)

63% (2013)

68% (2000)

70% (1998)

71% (2001)

60% (1985)

53% (1999)

51% (2009)

40% (1997)

68% (2001)

55% (1998)

38% (2003)

53% (1996)

61% (1997)

73% (1997)

65% (1998)

67% (2000)

52% (1999)