1995

7.0

1984

8.4

2002

6.9

1988

6.2

1992

4.7

2023

4.2

2022

0.0

2021

6.7

2016

2.7

2013

1.0

2005

6.8

1999

5.5

1961

7.2

2006

7.0

1970

5.0

1974

7.5

1955

7.9

1945

7.6

1949

6.9

2008

5.5