2015

6.4

1975

4.5

1960

7.3

2023

7.7

5.0

2009

5.6

1998

4.8

2006

5.1

1997

7.6

2018

6.0

2000

5.6

1946

6.9

1954

7.4

1953

7.7

1959

7.7

2020

7.0

1923

6.8

1975

6.8

1980

6.1

2021

6.1