1996

8.2

2020

7.4

1981

6.5

1946

5.9

1986

5.8

2000

7.4

1895

6.7

2012

9.5

2005

9.8

2021

7.4

2014

7.6

2002

5.2

2006

6.9

1978

6.6

2002

6.6

2008

6.5

2017

8.0

2011

7.1

2006

4.1

2013

8.0