1959

3.7

2006

2.6

1970

4.5

1997

6.4

1945

4.0

2000

5.5

2004

5.6

2025

7.8

1912

5.0

2012

3.8

2013

7.0

1990

7.3

2014

10.0

2023

10.0

2016

6.2

2013

9.0

2000

5.0

2018

6.6