2019

7.4

2012

4.9

2016

5.9

2009

5.4

2016

4.9

1968

6.6

2015

6.3

1986

6.8

1928

7.3

1980

6.7

1998

6.0

1973

7.1

2011

7.1

1999

5.6

2018

5.6

1939

7.2

1980

6.6

1997

6.0

2008

4.6

1975

7.2