Occupational  history	Number of live births	Total
Total	Total	5.710.847
Total	None	526.501
Total	One	1.409.709
Total	Two	2.621.097
Total	Three	854.225
Total	Four	194.014
Total	Five and more	105.302
Total	Average	1,85
Previously worked  sometime	Total	4.911.132
Previously worked  sometime	None	497.476
Previously worked  sometime	One	1.258.509
Previously worked  sometime	Two	2.258.555
Previously worked  sometime	Three	658.130
Previously worked  sometime	Four	161.914
Previously worked  sometime	Five and more	76.547
Previously worked  sometime	Average	1,8
Have never worked	Total	799.716
Have never worked	None	29.025
Have never worked	One	151.200
Have never worked	Two	362.542
Have never worked	Three	196.095
Have never worked	Four	32.099
Have never worked	Five and more	28.755
Have never worked	Average	2,19