2017

6.7

2002

6.4

2013

5.2

2014

6.0

2001

7.8

1993

7.7

2005

6.1

1964

6.3

1989

6.0

1991

5.6

2016

7.9

2008

6.8

1992

4.9

2004

3.8

2024

0.0

2011

5.0

1940

5.0

2010

7.5

1998

5.8

2011

4.0