Statistics on which century the database has data on:

 There are 10223 undated entries

 From  100 there are 2 entries
 From  200 there are 5 entries
 From  300 there are 4 entries
 From  400 there are 20 entries
 From  500 there are 90 entries
 From  600 there are 169 entries
 From  700 there are 164 entries
 From  800 there are 292 entries
 From  900 there are 482 entries
 From 1000 there are 658 entries
 From 1100 there are 886 entries
 From 1200 there are 1098 entries
 From 1300 there are 1288 entries
 From 1400 there are 1264 entries
 From 1500 there are 1136 entries
 From 1600 there are 1104 entries
 From 1700 there are 1705 entries
 From 1800 there are 3283 entries
 From 1900 there are 2440 entries

This version of the timemap is made from the Database dated 17 Mar 97