1961

6.9

2010

7.0

2012

9.3

2014

5.9

2020

6.3

1921

7.6

1888

4.8

1953

7.2

2014

7.1

1998

6.1

6.4

2004

7.7

2004

6.6

1989

5.8

2022

4.5

2023

6.5

2025

6.9

1955

7.2

1975

4.5

2007

7.8