The National Women’s Law Center (NWLC) has published a report based on the most recent U.S. Census Bureau data showing that women earn 80 cents for every dollar paid to their male counterparts across 97% of occupations.

The report finds the wage gap is due in part to the fact that women are overrepresented in low-wage jobs, and underrepresented in high-wage jobs. Even when comparing women and men in the same occupations, the report finds women are still paid less than men doing the same jobs in nearly every sector of work.

In low-wage jobs, such as waitresses, waiters, janitors, maids, and childcare workers, women make 71 cents for every dollar paid to men. In higher-wage occupations, such as lawyers, engineers, and physicians, women make 75 cents for every dollar paid to men in the same occupations. This report analyzes the wage data across occupations without reference to geography, experience, or other potential non-gender related reasons for the pay gap.

NWLC uses this data to calculate the day each year that women have to work to make what men did in the previous 12-month calendar year, commonly referred to as “Equal Pay Day.” This year, Equal Pay Day will be on April 10.