2001

4.8

1996

6.2

1960

4.0

2004

5.6

1995

8.0

1978

6.0

2008

5.3

2007

6.1

2014

6.1

2018

4.2

2008

7.5

1984

6.9

1948

2.5

2021

0.0

2017

5.9

2019

8.0

2020

5.0

2012

5.7

1954

4.6

2021

7.4