2004

6.2

2009

7.4

1970

6.3

1987

7.1

2020

7.3

2011

7.5

2012

5.5

1990

6.4

2019

6.7

2021

8.4

2012

4.5

2016

5.9

2001

7.3

2000

5.6

2016

4.5

1966

6.3

2014

6.9

1987

7.5

2013

5.9

1955

7.2