2006

9.3

1985

7.0

2001

7.6

2004

8.6

1995

7.8

2003

5.2

1975

6.9

1989

8.0

2014

7.3

1966

7.6

1964

7.4

1959

7.6

2009

6.1

2004

8.3

1979

7.4

1998

7.4

1996

8.1

2017

8.0

2010

6.9

1995

7.8