1980

6.3

1996

5.9

6.4

2020

8.4

1986

5.8

2014

5.9

1997

6.6

5.0

2002

7.4

2019

6.8

1955

6.1

2017

6.9

2009

8.5

2015

6.7

2024

6.9

2017

7.4

2024

6.1

1975

4.5

2024

5.8