20% (2009)

64% (2002)

62% (2000)

67% (1995)

51% (2006)

59% (2003)

59% (2006)

60% (2003)

40% (2006)

55% (2013)

54% (1993)

58% (1997)

60% (2007)

52% (1997)

48% (1996)

62% (2015)

53% (2005)

54% (2000)

67% (2005)

54% (2009)