52% (1984)

40% (2001)

65% (2008)

52% (2006)

32% (2003)

60% (2005)

50% (2008)

43% (2007)

58% (2001)

68% (2018)

10% (2010)

80% (2008)

0% (2018)

80% (2017)

57% (2015)

0% (2009)

40% (1993)

0% (2007)

53% (1970)

35% (1970)