1980

8.2

2013

4.5

1960

8.4

2005

7.1

2006

6.6

1982

7.2

1999

6.5

1935

7.5

2019

3.5

2014

7.7

2019

4.4

2003

1.5

1968

7.6

2006

3.4

1986

6.0

1995

5.2

1931

7.2

2006

5.6

2025

5.6

2023

4.0