56% (2005)

51% (1997)

44% (1993)

64% (1997)

55% (2001)

64% (1999)

61% (2000)

60% (1997)

60% (2009)

46% (2001)

44% (1997)

32% (2000)

46% (2000)

38% (2001)

57% (1995)

43% (1975)

58% (1999)

49% (1996)

34% (1996)

42% (2018)