1977

6.4

2005

5.5

1982

7.3

2008

5.9

2001

6.3

2001

8.3

2004

6.8

1994

5.7

1997

5.8

1956

0.0

1956

0.0

2008

5.7

2007

3.2

2011

6.2

2002

4.9

0.0

2017

8.2

1995

4.9

2025

4.4

2021

6.0