1977

6.0

1984

5.1

1942

6.2

2016

6.4

1999

7.3

2001

4.9

1998

7.1

1973

6.8

1980

6.1

2004

1.0

2003

7.2

1970

7.1

1999

5.9

2016

6.8

1998

4.7

1937

6.6

2011

6.0

1932

7.5

1946

7.6

1995

7.9