1969

3.5

2001

5.6

1997

3.7

2008

5.7

1994

6.4

2001

6.7

1978

6.3

2024

4.0

1919

0.0

2017

6.8

2023

6.5

1995

7.3

2000

7.1

1997

7.1

2019

8.0

1999

0.0

2021

7.4

2007

7.2

2006

5.8

1993

6.9