1977

6.7

2017

7.3

2022

6.9

2017

7.9

2006

6.4

2012

5.6

2009

7.4

2021

6.0

2019

6.3

1973

3.2

1973

7.5

2018

7.2

1988

9.2

1939

7.2

2024

6.0

2009

3.8

2017

6.0

2003

5.0