1973

7.5

1976

7.8

2007

6.9

2022

3.2

1999

7.3

2014

4.6

1973

6.9

2024

8.1

1968

4.8

2006

6.9

2009

6.8

2016

4.9

2017

7.0

1998

7.2

2018

6.7

1943

8.2

2016

6.2

2014

6.5

2010

7.0

2015

6.6