1951

7.7

2000

5.7

1996

6.2

1995

6.3

1995

6.9

2001

6.8

2005

6.3

1981

7.4

1998

6.3

2003

5.9

1949

7.0

0.0

2014

6.4

1974

4.6

2025

7.1

1947

6.5

1984

6.3

2007

6.1

1993

6.7

2004

6.2