1989

5.9

2017

7.4

1988

5.1

2019

6.8

2014

6.5

2012

6.5

2022

8.8

2013

7.6

1997

4.6

2010

7.1

2012

7.1

2006

7.0

1984

6.7

2014

7.7

2015

6.6

1968

6.4

7.8

1933

7.3

1982

5.9

2014

7.5