1968

6.9

1993

6.1

2025

6.5

1982

5.2

1888

4.9

2006

5.5

2009

4.8

1963

6.9

2005

6.6

2024

7.3

2020

6.4

2025

7.1

2006

7.0

2021

5.9

2020

6.7

2012

5.8

2025

5.8

2001

6.9

1988

6.4

1988

6.2