68% (2017)

33% (2009)

54% (1992)

63% (1990)

64% (2001)

60% (2007)

61% (2005)

68% (1996)

62% (2011)

59% (1998)

33% (2000)

57% (1994)

49% (1999)

54% (2004)

61% (1992)

59% (1997)

61% (2001)

54% (1994)

59% (2006)

55% (1996)