1970

3.8

2007

6.4

2006

6.3

1996

7.0

2001

7.4

1991

5.9

1973

3.5

1970

3.0

2023

0.0

2017

6.7

2003

6.6

2004

5.5

2004

5.3

2006

6.2

2010

5.1

1978

6.0

2022

5.5

1991

4.6

2002

6.3

1975

7.4