2004

5.8

2019

6.4

2017

6.2

2010

5.9

2012

8.5

2020

6.0

2010

6.1

2017

6.1

2012

4.7

1987

5.3

2006

6.7

2016

6.8

2009

6.4

1980

5.9

2016

6.1

2001

7.4

2000

6.0

1972

4.0

1896

5.2

2024

7.4