1982

5.8

2019

8.7

2015

7.6

2016

6.7

1977

5.4

2014

8.0

2011

6.6

6.6

2024

6.5

1963

6.9

1985

6.1

5.8

6.6

2021

7.7

2012

6.5

1980

5.9

2024

7.3

2017

6.6