1973

6.4

2020

4.7

1973

6.8

2010

6.9

2003

6.6

1993

5.4

2021

7.5

1990

4.2

1996

9.5

2018

6.7

2012

5.7

2010

6.8

2004

3.5

2017

8.0

2007

6.5

2010

6.8

2013

5.1

1965

6.7