1982

5.8

1968

6.9

1993

6.1

2017

7.8

2011

7.8

2018

6.1

2018

7.9

2002

5.7

1954

8.0

2013

7.6

2021

6.6

2022

7.9

2005

7.4

1998

6.2

2009

7.7

2016

6.1

2021

6.8

2018

6.4

1964

7.0

2001

8.9