1993

5.3

2003

6.9

1997

6.1

2015

6.9

2012

6.2

2014

7.8

2011

6.4

1974

7.7

2021

10.0

2014

7.4

2004

5.9

2007

5.4

2008

6.1

2001

8.4

1992

7.1

2018

6.8

2016

7.0

1993

6.2

1985

5.3

2010

6.8