1980

6.9

2000

4.5

1934

6.7

2013

6.1

2003

6.2

2014

5.7

1961

6.6

2005

8.3

2023

9.4

1969

7.3

2004

7.1

1990

6.0

1898

5.7

2009

7.3

2008

5.7

1987

5.7

1983

6.6

1975

7.2

1976

7.3

1991

7.0