Update README.md

Correct License Statements

README.md

@@ -15,8 +15,9 @@ This repository provides a MATSim transport model for the metropolitan area Ruhr
 
 The **MATSim program code** in this repository is distributed under the terms of the [GNU General Public License as published by the Free Software Foundation (version 2)](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html). The MATSim program code are files that reside in the `src` directory hierarchy and typically end with `*.java`.
 
-The **MATSim input files, output files, analysis data and visualizations** are licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.
-<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/80x15.png" /></a> MATSim input files are those that are used as input to run MATSim. They often, but not always, have a header pointing to matsim.org. They typically reside in the `scenarios` directory hierarchy. MATSim output files, analysis data, and visualizations are files generated by MATSim runs, or by postprocessing.  They typically reside in a directory hierarchy starting with `output`.
+The **MATSim input population** is licensed under the <a rel="license" href="https://creativecommons.org/licenses/by-nc/3.0/de/deed.de"> Creative Commons Attribution CC-BY-NC 3.0 DE License </a> and was provided in its initial version by Senozon Deutschland GmbH.
+The **MATSim output files, analysis data and visualizations** are licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">Creative Commons Attribution 4.0 International License</a>.
+<a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc/4.0/80x15.png" /></a> MATSim input files are those that are used as input to run MATSim. They often, but not always, have a header pointing to matsim.org. They typically reside in the `scenarios` directory hierarchy. MATSim output files, analysis data, and visualizations are files generated by MATSim runs, or by postprocessing.  They typically reside in a directory hierarchy starting with `output`.
 
 [//]: # (**Other data files**, in particular in `original-input-data`, have their own individual licenses that need to be individually clarified with the copyright holders.)