original: RIAA Website Although total worldwide album sales are not calculated by any single entity, as of 2004 several industry sources estimated Rush's total worldwide album sales at over 40 million units.
simplifications: Worldwide album sales are not calculated by any single entity. As of 2004 several industry sources estimated Rush's total worldwide album sales at over 40 million units. Based RIAA Website the total worldwide album sales are not calculated. But as of 2004 several industry sources estimated Rush's total worldwide album sales at over 40 million. Although worldwide album sales are not calculated by one company, sources estimate Rush's worldwide album sales at 40 million+ units. Total worldwide album sales are not calculated by any single entity. Rush's total worldwide album sales are at over 40 million units as of 2004. RIAA Website: Total worldwide album sales are not calculated by a single source. However, as of 2004 several industry sources estimated Rush's total worldwide album sales at over 40 million units. Total worldwide album sales are not calculated by any single entity.  As of 2004 several industry sources estimated Rush's total worldwide album sales at over 40 million units. As on 2004, several sources estimate that Rush has sold over 40 million albums worldwide. Although no single entity calculates total worldwide album sales, industry sources estimate Rush's total worldwide album sales in 2004 at over 40 million units. Worldwide album sales are not calculated by any single entity, but as of 2004 several industry sources estimated Rush's worldwide album sales at over 40 million units. Although total worldwide album sales are not calculated by any single organization, as of 2004, several industry sources estimated Rush's total worldwide album sales at over 40 million units.