1963

5.9

2013

4.7

2006

7.0

1991

5.6

2012

7.0

2012

7.6

1999

7.4

5.6

1992

8.2

2014

5.6

2002

6.8

2019

5.7

2013

7.6

1941

6.2

2009

8.5

2014

8.5

2010

7.1

2023

6.1

2024

8.4

2003

5.8