66% (2003)

54% (2012)

67% (2000)

60% (1997)

67% (2007)

59% (2006)

60% (2001)

68% (2004)

46% (2004)

57% (2004)

70% (1991)

56% (1999)

57% (1993)

51% (2003)

25% (2004)

61% (2009)

51% (2004)

53% (2001)

20% (2013)

65% (2002)