1979

4.8

2016

7.4

2011

7.5

2003

6.2

1931

5.8

6.3

1957

6.9

1984

6.5

2014

5.4

1980

5.6

2013

6.1

2023

6.0

2023

9.2

1969

4.9

2004

3.8

1985

6.0

2011

6.0