According to the IRL:
VERSUS' first three races of the 2010 season, as compared to the same number of live events last season, have grown 67 percent in household ratings (.5 vs..3) and 30 percent in average viewers (404,000 vs. 310,000).
Additionally, viewership among all key male demographics is also
showing substantial growth: Men 18-34 (up 104 percent), Men 18-49 (up 38
percent) and Men 25-54 (up 60 percent).