1995

6.6

2001

4.4

2017

5.2

2021

6.7

2019

3.5

2007

6.9

1967

7.0

1991

7.7

2023

2.5

1998

7.2

2022

5.3

1986

4.0

2023

7.1

1927

0.0

1975

1.0

2015

6.3

1931

6.8

1935

5.0

2006

5.8

1981

6.5