2017

5.9

1981

6.7

2009

5.8

2008

7.7

1968

6.4

2003

6.3

1988

5.8

2007

9.0

2011

5.7

1996

9.4

1972

10.0

2025

5.8

2019

6.5

2024

5.9

1920

6.7

1986

6.4

2018

6.5

2003

8.3