67% (2015)

75% (2008)

77% (2017)

53% (2013)

47% (2002)

59% (2011)

53% (2009)

60% (2015)

53% (2010)

55% (2002)

55% (2011)

48% (2008)

40% (1994)

44% (1993)

41% (2008)

45% (2002)