1991

1.0

2004

6.5

1971

7.5

1973

5.7

1987

3.7

1992

6.6

1976

6.6

1950

8.1

1929

3.8

2013

4.2

2016

5.0

2008

6.7

1997

0.0

1932

6.0

1970

6.8

2016

0.0

2016

0.0

1984

6.8

2010

7.0

2016

7.0