1987

6.1

2014

8.5

2018

5.3

2003

6.6

1952

6.5

1977

6.7

2012

9.3

1973

6.4

2002

5.5

2022

8.3

2009

6.8

2006

6.3

2011

4.5

2006

5.1

2016

7.4

2021

2.5

2006

6.6

1988

9.2

2010

8.1

5.6