2017

6.9

2023

8.4

2003

6.2

1993

6.5

2004

7.3

7.8

1967

6.8

2008

6.6

1997

5.1

2002

5.4

2001

6.2

2013

7.3

2012

6.4

2000

7.1

1971

6.8

2018

5.3

1998

5.1

2004

6.4

2009

5.7

2015

7.4