62% (2015)

60% (2000)

61% (2001)

39% (2005)

75% (1997)

57% (1997)

65% (2003)

56% (2015)

60% (2015)

69% (2003)

39% (2006)

49% (1996)

63% (1996)

54% (1996)

55% (2011)

67% (2015)

61% (1997)

55% (2011)

54% (2009)

59% (2003)