1993

6.1

1968

6.9

5.3

1988

5.8

2015

6.6

2015

6.7

2019

5.6

1985

6.1

2018

6.5

2022

8.6

1988

5.5

2023

9.2

2006

5.7

1975

7.1

1953

4.8

2022

6.1

2020

6.4

1981

5.8

1939

7.5

6.6