2018

6.0

2017

6.3

2013

9.0

2017

7.7

1988

8.0

2006

4.0

1999

6.5

2000

6.5

2007

7.0

2003

0.0

1990

5.6

2002

6.8

2006

7.2

1973

7.7

1974

7.2

1970

3.0

2004

7.9

2001

8.0

1985

6.8

1961

6.8