2014

7.1

6.4

1998

9.3

1990

4.7

5.0

1975

4.5

2013

6.0

2016

4.2

2005

6.5

2018

5.5

2021

8.2

2017

7.2

1972

4.5

1915

5.0

2018

6.5

1960

5.0

2003

7.0

2023

10.0