The human species may be more than 100,000 years old but the bulk of its numerical growth has come in just the last few decades: 2.6 billion of today's 5.6 billion people have been born since 1960.
The human species has not grown numerically.
( z1 grow :polarity - :ARG1 ( z2 species :mod ( z3 human ) ) :manner ( z4 numerical ) )