The graph above shows the total sales, in millions of dollars, for three companies, A & B & C, in a particular sector for the years 1998 through 2007 inclusive. Assume these companies are the only three companies active in this particular sector. Companies A & B existed since the 1980s, although only data from 1998 is shown. Company C's first year in existence was 2000.
Company C was responsible for approximately what percent of total sales in the sector in 2007?
Three Companies in a Sector