Cumulative numbers of particles that reached q < 1.3 au, divided into four main groups: Amors, Apollos, Atens, and Atiras. A single particle could enter several NEA groups. First entries into these groups are registered at 2 500, 14 500, 166 100, and 236 700 yr, the median times of those entries are approximately 0.31, 0.49, 2.1, and 2.1 Myr, and the total numbers of bodies reaching these groups are 10 025, 9 957, 875, and 474, respectively.