Abortion is a failure at exterminating minority populations, if that were its proponents' intention. This country used to have a ratio of nine white people to one black. Now there is a ratio of approximately 4 1/2 white babies born to one black. About three white babies to two Hispanic, the latter because of immigration.
Better figures below - current births not projected trends.
“Hispanics are more than a quarter of the nations youngest residents, according to the new population estimates, accounting for 26.3% of the population younger than age 1. Among other major non-Hispanic groups, the share for whites is 49.6%; for blacks, 13.7%; and for Asians 4.4%.”
http://www.pewsocialtrends.org/2012/05/17/explaining-why-minority-births-now-outnumber-white-births/
That's not really the case.
Blacks make up about 13% of the population and that number has remained pretty constant for decades (your chart even shows it) and Hispanics make up about 17%. I'm not sure about Hispanics, but for decades over 30% of abortions have been on blacks.
The bottom line is that nearly 4000 INNOCENT Americans are killed in abortuaries each day, one ever 24 seconds. Are you okay with any of that, regardless of ethnicity?