1995

5.9

2018

6.7

1998

6.0

2001

8.0

2005

8.3

1972

8.7

2015

6.8

1959

8.1

2014

5.6

1957

7.0

2016

6.1

2011

6.2

2001

9.9

1956

6.1

2015

4.4

2007

5.6

2006

6.9

2020

7.2

2009

5.3

2005

5.7