1962

7.8

1996

7.1

2023

8.9

2015

7.6

2015

8.7

2017

6.6

2015

6.9

2011

7.7

1979

5.5

2020

7.8

2007

8.0

1969

7.3

1974

7.6

2018

7.9

2019

7.3

2012

6.7

1999

8.3

2009

7.4

2010

7.5

2023

7.3