1970

7.3

1968

5.3

2004

6.8

2023

8.2

2005

7.5

1980

4.0

2016

7.2

2019

7.5

2018

0.0

2003

7.1

1983

5.9

1996

6.7

2008

7.6

2014

3.5

2002

6.4

2008

5.0

2015

8.0

1995

8.0

1997

9.0

2021

0.0