2017

7.4

1985

5.9

2014

7.6

2019

7.7

2012

5.4

2009

7.5

2024

8.7

2007

5.7

1979

5.2

9.0

2015

7.9

2018

7.0

2013

8.6

1939

5.0

1958

7.2

2013

7.1

1967

7.0

2024

6.0

1926

5.0