1990

6.4

1996

5.9

1998

6.3

2002

7.8

1991

6.6

2001

5.8

2006

7.0

2006

6.1

1998

6.3

1995

5.7

1949

7.7

1988

4.9

1949

6.2

2023

6.2

1940

4.7

1949

6.9

2021

6.7

2017

5.6

1993

0.0

1941

5.9