2015

6.2

2005

7.1

2014

8.0

2013

7.7

2016

7.5

2012

6.6

2004

6.6

1943

8.2

1999

8.2

2002

7.1

2001

7.9

2017

7.4

1994

8.5

2005

5.8

2000

7.7

2006

5.8

2019

8.1

2021

6.8

1989

7.2

2007

7.8