2021

7.8

1998

6.1

1995

5.9

1989

7.3

2000

5.6

2007

6.9

2021

6.2

2014

7.0

1993

7.4

1967

7.7

2019

5.6

1927

0.0

1945

6.9

2005

6.5

2005

4.0

2003

6.5

2009

5.0

1998

7.0

1942

5.2

2017

5.7