79% (2008)

64% (2010)

72% (2005)

63% (2007)

62% (1991)

55% (2006)

72% (1998)

59% (2009)

72% (1997)

30% (2020)

0% (2001)

57% (2010)

60% (2003)

57% (1988)

60% (1993)

56% (2013)

0% (1993)