1970

6.3

2000

0.0

1949

6.9

2005

6.0

1952

6.5

2014

6.6

2009

6.0

2022

0.0

2014

7.0

2002

5.8

2016

4.0

1984

6.8

2008

5.5

1986

6.8

2006

7.0

2017

5.5

1988

4.9

2017

5.7

2020

8.0

2010

5.0