53% (1998)

50% (2007)

72% (2008)

58% (2000)

56% (2009)

52% (1997)

66% (1997)

60% (2019)

57% (2013)

67% (2004)

50% (2005)

49% (2000)

40% (2010)

45% (1997)

0% (1970)

56% (2006)

40% (2018)

10% (2020)

48% (1994)

20% (1993)