1955

2.4

2004

5.6

1980

5.9

1966

6.3

1940

6.0

2007

6.1

2006

5.7

2021

6.2

2005

5.9

2004

6.9

1977

5.3

1981

7.4

1997

6.8

1966

7.1

1955

7.3

2020

5.9

2024

5.6

1956

5.4

2018

6.5

1986

5.9