1964

7.4

2021

9.2

2011

7.3

2019

7.7

2020

6.8

6.8

2012

9.8

1998

6.1

1969

6.4

2018

7.3

1945

7.2

2017

6.0

1973

7.2

2001

6.9

2013

8.1

5.6

2008

6.5

1994

9.7

2012

9.7