1968

6.9

1969

5.1

1980

5.9

1926

5.6

2018

6.7

2019

6.5

1988

6.4

2014

6.5

1998

6.0

2023

6.1

2001

6.9

2016

6.7

2015

5.8

2024

7.3

2025

5.9

1935

6.6

1896

5.2

2025

6.6