1966

3.7

2020

6.9

2009

7.3

2016

6.8

1994

6.8

2007

9.8

1986

6.1

2011

7.1

1966

6.7

2009

4.7

2001

8.0

2003

6.2

2016

7.7

2008

4.6

1996

5.8

1990

5.8

2009

6.9

1958

6.6

1997

6.5

2019

5.6