1969

3.7

2001

6.1

2013

6.1

1935

6.7

2012

7.1

2023

5.9

2020

6.7

1995

5.6

2017

6.1

2022

6.3

1992

6.8

1944

7.3

2021

5.9

2003

7.0

1982

5.8

1968

7.6

2018

6.0

2015

6.3

1979

6.6

1984

6.5