1931

8.3

2000

7.4

2001

6.7

2013

7.6

2019

8.2

1989

7.3

2007

6.5

2003

7.2

2017

7.0

2019

6.8

1972

6.3

1977

8.0

2006

6.6

2016

7.1

2020

7.6

2014

7.9

1995

7.9

1986

7.4

1978

7.6

2001

7.5