The study covers the two consecutive General Industry Censuses of 1985 and 1992. The censuses cover all public establishments and private establishments with 10+ employees.
Based on the result of the study, 29 % of the establishments which were active in 1985 were closed in four years. The ratio of liquidation in four years are 45 % for 1986, 39 % for 1987, and 40 % for 1988.