2013

6.6

2010

6.9

1987

5.3

1975

6.8

2007

5.5

1971

6.8

2010

5.5

2021

7.5

2012

6.0

1946

7.2

1927

7.2

1970

6.7

2022

8.3

1957

7.7

2006

6.4

2008

7.5

2015

7.7

2003

6.8

1973

7.1

2023

5.6