1897

3.9

1896

4.3

2013

6.1

1975

7.0

2015

6.6

2021

6.7

1999

9.1

2016

6.5

1989

9.2

6.1

2020

6.4

2015

6.0

2018

4.5

2024

7.2

2008

6.7

1956

6.2

2005

5.7

2015

6.4

2013

5.7

2018

6.3