1965

7.5

1994

5.4

2017

5.7

1992

5.3

2005

7.0

2007

6.4

1988

7.6

1979

7.1

2007

5.5

1939

2.0

1999

6.5

2001

5.9

2001

3.0

2002

4.9

2008

7.2

1966

4.7

2007

6.6

2014

0.0

1992

7.4

2007

5.4