Annual survey of industries (ASI) is carried out by the Industrial and Construction Statistics division since 1984. The scope of this ASI is all the activities categorised under the three industry divisions, namely Mining and Quarrying, Manufacturing and Electricity, Gas and Water of the International Standard Industrial Classification of the United Nations. State owned industrial establishments, industries coming within the perview of Board of Investment (BOI) and private sector establishments with 5 or more persons engaged, have been covered in this survey.