73% (2002)

71% (2012)

48% (1998)

72% (2007)

65% (2007)

55% (1986)

69% (1985)

54% (1994)

72% (1990)

60% (1997)

70% (2013)

30% (1991)

55% (1999)

60% (2015)

60% (2003)

50% (2017)

0% (1987)

80% (2018)

100% (2002)

40% (1999)