_id id   amount   oper_ru   rate   id_oper   res_kz   id_res   oper_kz   kod_curr   res_ru   period   version_name   version_description   version_keywords   extraction_date   api_endpoint   source_url   colspacer
id amount oper_ru rate id_oper res_kz id_res oper_kz kod_curr res_ru period version_name version_description version_keywords extraction_date api_endpoint source_url