The data used could be found here and here.
(Feel free to use this figure for your own purposes, but please do not forget to mention the source, which is this blog.)
Simon Hedlin
Fill in your details below or click an icon to log in:
You are commenting using your WordPress.com account. ( Log Out / Change )
You are commenting using your Twitter account. ( Log Out / Change )
You are commenting using your Facebook account. ( Log Out / Change )
Connecting to %s
Notify me of new comments via email.
Notify me of new posts via email.
Δ
RSS - Posts