2007

6.1

2002

6.4

1981

7.0

1954

6.7

1993

1.0

2009

4.5

2017

6.5

2018

6.1

1979

8.7

1992

7.3

2014

5.5

1998

7.2

1978

7.2

1995

6.5

2006

5.5

1992

6.7

1995

5.8

2007

7.3

1993

5.7

2004

6.9