1998

7.3

2009

7.8

1979

7.6

1970

6.7

1992

7.2

2000

6.8

2003

6.3

1970

7.5

1983

7.1

1985

6.6

1965

6.4

2004

7.2

2014

4.4

2023

6.6

1943

6.5

2022

6.8

1966

0.0

2013

5.3

2005

7.0

2000

7.3