1948

6.2

2002

6.7

2017

7.9

2012

7.5

2008

6.3

2000

6.2

1988

6.1

1992

5.6

1977

7.0

1996

6.0

2002

6.8

1974

5.5

1973

5.7

2006

6.4

2002

5.4

2016

7.6

2022

4.3

1997

6.6

2000

6.4

2005

5.5