Table 4

Dry cleaners and other workers in dry cleaning shops by length of employment

Data source	Length of employment					Total	Total %
Data source	1–4 y	5–9 y	10–14 y	15 y+	Unknown*	Total	Total %
*We know from the census forms that these people worked in a dry cleaning shop in 1970.
†Possible years of registration 1964–79, see text.
‡Hammershøy E. [The Danish Laundry and Dry Cleaning Industry]. Copenhagen: Forlaget Lieber, 1971. After 1971 the 34 persons were looked up in the telephone books as well.
Pension scheme†	24	45	10	3	–	82	47
Biography book‡	0	9	8	17	–	34	19
Telephone book	1	11	24	11	–	47	27
Only 1970 census	–	–	–	–	13	13	7
Total	25	65	42	31	13	176	100
Total %	14	37	24	18	7	176	100