2004

7.2

2009

6.1

1970

7.6

2001

6.3

1974

6.2

0.0

2008

5.9

2008

5.5

2020

6.0

2008

6.4

2005

5.1

2010

6.0

1995

6.3

2021

6.4

2015

6.5

1932

7.4

2000

6.9

1968

7.1

1975

7.8

2002

7.2