1973

5.9

2011

7.4

5.6

2009

5.0

2016

10.0

1957

6.9

2003

5.4

3.6

1934

3.7

2015

8.5

2003

8.0

2014

7.0

2020

8.0

1968

4.0

1975

4.0

1950

6.9