71% (1999)

67% (2012)

55% (2001)

54% (2009)

75% (1996)

73% (2006)

54% (2013)

66% (2003)

67% (1995)

56% (2000)

62% (2016)

56% (1992)

71% (1994)

61% (2003)

69% (2015)

57% (1996)

73% (2013)

72% (1998)

67% (1991)

61% (2012)