1977

7.0

2000

3.9

2009

5.8

2008

5.4

1992

6.6

1969

6.6

2010

6.3

2001

6.6

1984

6.8

2022

6.2

1915

0.0

2019

7.1

2002

5.4

1996

7.0

1978

0.0

1938

6.1

2016

6.0

1981

6.0

2013

6.0

2002

6.4