1995

7.8

2016

8.2

1979

7.0

1931

8.3

1972

8.7

2004

4.2

2014

6.4

2013

6.6

1968

7.6

1990

7.0

1982

5.9

1984

7.1

1990

7.2

1980

6.7

2019

7.4

2018

7.8

2020

6.7

2019

5.7

2021

6.1

1998

6.2