2003

6.7

1991

8.1

2011

6.5

2013

7.6

2000

6.3

2012

8.2

2008

7.8

2011

6.2

2004

8.0

1980

8.4

2023

5.8

2001

6.8

2011

7.2

1973

6.8

2021

6.5

2021

7.9

2008

6.1

2012

7.2

1979

8.2