2004

6.7

2011

7.2

1966

6.2

1989

7.9

2003

5.2

2001

6.0

2014

5.3

1999

7.4

1990

5.7

2013

6.2

2019

6.7

2020

6.5

2007

7.7

2016

4.8

2019

7.1

1903

7.0

2017

5.2

1920

6.4

1968

7.4

2013

7.6