2011

5.7

2020

7.4

1993

5.0

1970

8.2

2015

7.0

1998

6.2

2018

5.8

2018

7.1

2009

7.4

1988

7.0

1992

6.9

1942

6.9

1973

6.9

2015

3.7

1982

6.7

2023

7.0

2008

7.5

2016

7.5

2017

5.9

2019

6.4