1986

6.5

1998

6.7

1966

7.3

1972

7.0

1999

6.9

1993

6.9

1994

6.2

1994

6.7

1997

6.6

2014

5.5

2020

1.0

2014

5.4

2021

6.0

1921

0.0

2024

4.3

1951

7.1

2023

8.0

2019

6.0

2017

5.3

2019

6.0