FIDE Rating Growth in 1999-2001

With the introduction of FIDE IDs in 1999, we have a good measure for the growth of the rating system. Here are some counts of players in the first few years, along with new FIDE IDs (i.e. new players) added each year:-

1999: 30204; 3564 not 1999, but 2000 & 2001
2000: 33383; 4062 not 1999 & 2000, but 2001
2001: 36976

Taking 1999, 2000, and 2001 together, there were 37984 different FIDE IDs used. Of these, 543 were on the 1999 list, but not on the 2000 list, while 498 were on the 2000 list, but not on 2001.