2013

6.2

2005

5.2

1980

6.3

2011

7.1

2008

7.7

2012

8.2

1991

7.0

2004

9.9

2021

6.8

1988

5.8

2017

6.0

1995

5.6

2023

6.9

1967

6.1

2021

6.6

1985

6.9

2015

6.6

1972

6.7

2001

7.2

2013

7.5