1987

6.7

2020

9.8

1996

6.4

2022

7.1

2006

7.0

2003

6.0

2010

6.6

1983

4.9

2017

8.0

2015

6.4

1997

6.3

2016

5.4

1975

5.0

2019

6.2

2022

6.1

2002

6.0

2002

3.2

2015

5.8

2016

5.4

2018

5.3