Created with Raphaël 2.1.2
3.2%
2019
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0%
1.1%
2012
2.0%
2013
3.6%
2014
3.4%
2015
4.3%
2016
4.3%
2017
4.4%
2018
3.2%
2019