PHTree Growth
Bars indicate the number of nodes added to the tree each quarter since the establishment of the Academic Family Tree.
Compare to tree:

PHTree Nodes: Quarterly Growth

19-
15-
11-
8-
4-

Jan 05 Jan 08 Jul 08 Jul 10 Jul 11 Jan 12 Jul 12 Jan 13 Jan 14 Jan 15 Jul 15 Jan 16 Jul 16 Jan 17 Jul 17 Jan 18 Jul 18 Jul 19 Jan 20 Jul 20 Jan 21 Jan 22 Jan 23 Jan 24
Quarter
 PHTree 

Node vs. connection growth
It's also interesting to compare the rate of growth of nodes vs. connections. So far, they've grown at a similar pace, but as the tree is getting larger, the number of new connections seems to be gradually outpacing the number of new nodes.

PHTree: Nodes vs. Connections

19-
15-
11-
8-
4-

Jul 10 Jul 16 Oct 16 Jan 17 Apr 17 Jul 17 Oct 17 Jan 18 Jul 18 Oct 18 Apr 19 Jul 19 Jan 20 Apr 20 Jul 20 Oct 20 Jan 21 Apr 22 Oct 22 Jan 23 Apr 23 Jan 24 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000 -2000
Quarter
 New nodes  New connections 

Daily growth
A bit more detail about what has been happening during the last month.

PHTree: Growth during last 30 days

4-
3-
2-
2-
1-

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 01 02 03 04 05 06 07 08 09 10 11 12 13
Day
 PHTree