2014

6.0

2014

5.9

1975

4.5

2009

6.6

2005

7.6

1998

6.2

1984

6.5

1972

6.4

5.2

2003

6.2

2002

7.8

2011

9.7

2013

6.1

2023

8.0

2021

5.7

2010

7.5

1970

5.7

5.6

1928

7.0

2018

6.0