2018

2.5

1999

5.7

2020

7.3

2012

6.7

2003

5.1

2021

5.0

1992

6.2

2019

5.7

1980

6.2

2001

6.5

2012

1.0

1957

5.5

1973

7.5

2012

4.5

1970

6.8

1938

7.4

1962

8.0

1960

7.5

2013

2.2

2023

7.9