Update README.md

README.md

@@ -20,16 +20,16 @@ Note that the elements in 'form' are sorted in reading order.
 
 # Data Statistics
 
-| Document Type | Samples Number | BBox and Reading Order | 
-| :---: | :---: | :---: |
-| Synthetic Documents | 6.5k | ✓ |
-| Financial Reports | 16.1k ||
-| Medical Reports |5k||
-| Academic Papers | 8.9k ||
-| Books | 10.5k ||
-| Magazines | 3k ||
-| Web Pages | 5k ||
-| All | 55k ||
+| Document Type | Samples Number | BBox and Reading Order | Data Source |
+| :---: | :---: | :---: | :---: |
+| Synthetic Documents | 6.5k | ✓ | CC3M + Web + Wiki |
+| Financial Reports | 16.1k | N/A | Web |
+| Medical Reports |5k| N/A | Web |
+| Academic Papers | 8.9k | N/A | Web |
+| Books | 10.5k | N/A | Web |
+| Magazines | 3k | N/A | Web |
+| Web Pages | 5k | N/A | Web |
+| All | 55k |||
 
 # Data Structure