1999

7.2

2021

7.9

1941

8.0

2014

7.9

2008

7.3

1984

7.5

2013

7.9

2012

7.4

2016

7.0

2001

6.8

2014

6.5

1994

8.7

2000

7.7

2006

6.6

1982

7.9

1972

8.7

1997

6.5

2023

8.1

2009

7.6

2015

8.0