There were only about 128 million of us in the 18th century, when we were actively conquering the rest of the world. And only about 65 million in the 16th century. We're only such a small minority because our taxes and technology were wasted on a population boom of incompetent shitskins who will experience a mass die-off when our support ends. Put those resources towards our own people and we could easily have more than a billion White people in the next century, along with off-planet colonies.