64% (2000)

58% (2001)

65% (2011)

75% (1996)

60% (2000)

49% (2013)

57% (1992)

65% (1997)

60% (2003)

53% (2008)

62% (2005)

55% (2006)

55% (1996)

58% (2001)

53% (2009)

51% (2003)

53% (2000)

61% (2005)

50% (2003)

55% (2005)