2019

7.7

2018

8.3

1978

6.9

2001

8.9

2007

7.5

2006

6.6

2012

4.8

1984

7.1

2000

5.2

2003

6.0

1999

6.3

1970

6.3

2009

7.3

2008

7.1

2011

9.5

2008

8.1

2019

8.2

1985

6.5

2020

6.3

2005

5.9