1994

6.4

2018

5.0

2020

6.1

2000

6.1

2006

6.4

2003

5.8

1939

7.0

1997

6.7

1928

0.0

2016

4.2

1938

4.3

2003

6.6

2014

3.5

2000

7.0

2007

6.3

1959

7.7

1975

5.9

1991

4.7

1992

6.6

1991

6.3