2020

6.7

2000

6.3

2014

5.9

2005

7.3

2001

6.8

2025

5.0

1993

6.2

2022

6.5

1972

6.2

2015

6.8

1979

7.0

1967

6.9

2007

10.0

2011

6.1

2004

9.9

2021

6.6

1996

7.5

2006

8.0

2001

8.0

2013

7.6