https://www.vedomosti.ru/business/news/2012/05/03/indeks_delovoj_aktivnosti_v_sfere_uslug_ssha_v_aprele_upal?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=indeks_delovoj_aktivnosti_v_sfere_uslug_ssha_v_aprele_upal