1972

7.0

1994

1.0

2006

5.2

2017

8.1

2003

8.2

1980

5.8

1973

6.7

1996

4.7

1970

5.0

2011

0.0

2009

7.0

2003

0.0

2017

0.0

2020

7.8

2020

7.0

2015

6.0

2000

7.0

2002

7.1

2008

7.6

2001

7.8