61% (1986)

52% (2007)

61% (1992)

48% (2008)

61% (2007)

68% (1993)

58% (2005)

64% (2020)

63% (2019)

54% (2018)

55% (2016)

52% (2016)

43% (2015)

60% (2015)

40% (2014)

54% (2013)

62% (2013)

67% (2012)

56% (2011)

50% (2011)