74% (2008)

50% (2007)

68% (2004)

42% (2005)

47% (2001)

60% (2006)

66% (1998)

52% (1994)

63% (2007)

68% (2010)

58% (1991)

43% (2018)

66% (2012)

60% (2011)

46% (1985)

67% (1996)

30% (2005)

55% (2016)

57% (2000)

73% (2005)