73% (2006)

62% (2004)

49% (1999)

53% (1998)

64% (2011)

63% (2005)

59% (2003)

65% (2008)

64% (2002)

37% (2015)

46% (2003)

20% (2018)

0% (1977)

0% (2008)

52% (1984)

60% (2002)

0% (1981)

0% (1995)