1989

4.7

2017

7.0

2002

7.9

2018

8.1

2013

7.2

1969

7.0

1969

7.8

1996

8.4

2020

0.0

2003

6.7

1995

7.3

2013

9.0

2009

8.1

2013

7.4

2017

0.0

2017

0.0

2016

0.0

2000

2.0

2017

7.4

1976

6.8