1990

6.4

1997

5.8

2015

6.5

1988

6.2

2006

6.6

1947

6.3

1948

8.2

1971

6.3

1976

5.7

2017

6.7

1997

6.3

2018

6.3

1985

5.5

2000

6.6

1947

6.6

1986

5.1

2020

0.0

2004

5.8

2017

6.2

1938

5.8