2020

6.5

2008

5.9

2000

6.8

2005

6.7

1958

0.0

1972

7.2

1975

5.2

1997

5.8

1997

6.4

1999

6.4

2008

0.0

1959

5.2

2007

5.1

1974

5.4

1998

6.5

2011

5.0

2019

0.0

1937

6.8

2015

4.8

1996

6.4