1996

7.1

2001

6.8

1976

7.1

2006

7.4

1967

5.3

1993

5.5

2010

5.3

1995

7.3

1996

8.0

8.0

2011

8.3

1973

0.0

2003

6.0

2013

3.0

2012

5.0

1989

7.0

2013

8.0

2018

9.3

2022

6.0

2008

4.0