1999

7.4

2015

7.8

2004

8.6

2017

8.4

2021

7.7

2009

7.1

1986

5.0

2016

5.0

1969

7.6

2003

7.0

2017

8.2

2025

6.3

2019

7.0

1985

8.9

2013

8.7

2005

6.9

2004

9.0

2019

0.0

2020

8.8

2015

7.7