2009

8.6

2012

6.2

2012

7.2

2015

8.1

1955

7.7

5.4

2021

5.2

2017

7.6

2020

6.7

6.7

1977

6.5

1968

7.0

2011

9.8

2000

7.0

1926

4.0

2005

5.0

1943

6.0

2002

8.0

2018

6.0