From: A correction procedure for the working hours variable in the IAB employee history
Full-time
Part-time
Marginal
2010
5.79
2.40
1.11
2011
6.76
2.43
0.89
2012
6.03
2.79
0.82
2013
5.36
2.37
0.85
2014
5.35
0.84