2021

6.4

2015

3.9

2020

8.1

2018

6.4

2008

7.6

2024

7.4

2005

7.5

2019

6.8

2007

7.0

1999

5.7

2016

6.4

2018

7.2

1984

6.7

2017

5.8

2023

6.7

2003

7.5

2017

7.2

2020

6.2

2001

7.3