2009

8.4

2010

7.0

2020

6.1

2010

6.1

2004

6.0

5.6

2009

6.6

1989

10.0

2023

9.2

1978

6.8

1972

6.6

2014

5.3

2020

6.7

1908

3.7

2022

6.3

2016

7.3

2013

7.6

1959

5.9

2016

6.7

2018

7.0