1998

5.8

2009

5.9

1987

7.1

2000

6.9

2011

4.7

1932

7.3

2021

6.9

2004

2.8

1997

6.0

1995

6.1

1995

5.1

1944

6.0

1971

4.6

1972

4.8

1972

6.8

2008

4.9

1965

6.4

2008

5.6

1966

6.7

1971

5.7