52% (1999)

72% (2004)

30% (2001)

68% (2000)

35% (2007)

53% (2011)

63% (2007)

58% (2007)

79% (2014)

73% (2017)

60% (1987)

70% (2009)

0% (2014)

50% (1970)

70% (2002)

10% (1970)