1974

7.9

2006

7.0

2007

10.0

2005

7.5

2016

7.8

2014

6.8

2003

7.2

1998

6.6

2019

7.5

2023

0.0

2020

8.0

2004

6.9

2006

6.5

1988

6.1

2009

7.1

2009

5.5

2007

6.6

1961

3.3

1996

6.7

2010

6.6