1931

6.9

2020

6.8

2004

5.4

0.0

2021

7.0

2004

5.9

1963

4.9

1962

6.9

1990

6.4

1997

7.4

1986

7.9

2005

6.8

1961

7.3

1990

8.5

1991

8.3

1994

8.7

2003

6.5

1984

8.4

2003

7.7

2000

6.0