2001

6.8

1944

7.6

1996

6.9

1992

6.6

1991

6.0

1993

7.0

1990

7.3

1997

6.3

1932

6.0

2008

7.0

1977

6.6

2014

4.6

1995

5.1

2005

6.0

1969

6.1

1995

8.2

1939

7.2

1964

7.7

1946

7.5

2007

7.3