1980

6.3

2019

6.7

2024

9.1

2012

7.8

2024

9.9

2008

7.2

2018

6.0

1999

8.4

1984

6.7

2013

7.0

2015

6.6

2015

7.3

1972

6.0

1975

7.3

1962

7.4

1982

7.9

1992

6.7

1896

5.2

2015

7.3

2017

6.4