20% (1990)

57% (2014)

63% (2011)

0% (1987)

20% (1999)

64% (2018)

75% (2007)

67% (1988)

55% (2015)

54% (2012)

40% (2005)

0% (1968)

0% (2016)

40% (2018)

70% (2012)

60% (2017)

70% (2015)

42% (2010)

55% (2003)

35% (2004)