1977

7.3

1989

3.2

2014

4.1

2019

8.8

2018

6.0

2017

7.5

2015

5.4

1951

6.3

2023

7.7

2007

5.6

1996

4.0

1983

4.3

2016

8.0

2009

7.0

1997

4.0

1973

5.3