For each week beginning on a given date, the figures show the number of sites that reported they are using the drupal 5.1 release.

These statistics are incomplete; only Drupal websites using the Update Status module are included in the data. As this module is now included with the download of Drupal since version 6.x, the data is heavily biased toward newer sites. Read more information about how these statistics are calculated.

Week startingCount
March 22, 201517
March 15, 201516
March 8, 201518
March 1, 201517
February 22, 201514
February 15, 201515
February 8, 201517
February 1, 201517
January 25, 201517
January 18, 201518
January 11, 201518
January 4, 201520
December 28, 201420
December 21, 201419
December 14, 201418
December 7, 201418
November 30, 201419
November 23, 201417
November 16, 201420
November 9, 201422
November 2, 201420
October 26, 201419
October 19, 201419
October 12, 201418
October 5, 201420
September 28, 201419
September 21, 201421
September 14, 201420
September 7, 201421
August 31, 201420
August 24, 201424
August 17, 201421
August 10, 201422
August 3, 201423
July 27, 201421
July 20, 201423
July 13, 201421
July 6, 201422
June 29, 201422
June 22, 201422
June 15, 201421
June 8, 201422
June 1, 201424
May 25, 201425
May 18, 201423
May 11, 201423
May 4, 201423
April 27, 201423
April 20, 201425
April 13, 201424
April 6, 201426
March 30, 201429
March 23, 201434
March 16, 201432
March 9, 201434
March 2, 201433
February 23, 201432
February 16, 201430
February 9, 201433
February 2, 201433
January 26, 201429
January 19, 201429
January 12, 201428
January 5, 201431
December 29, 201334
December 22, 201333
December 15, 201329
December 8, 201334
December 1, 201332
November 24, 201334
November 17, 201333
November 10, 201331
November 3, 201336
October 27, 201335
October 20, 201334
October 13, 201335
October 6, 201334
September 29, 201334
September 22, 201335
September 15, 201338
September 8, 201336
September 1, 201335
August 25, 201336
August 18, 201337
August 11, 201334
August 4, 201336
July 28, 201340
July 21, 201336
July 14, 201337
July 7, 201336
June 30, 201335
June 23, 201337
June 16, 201336
June 9, 201337
June 2, 201340
May 26, 201338
May 19, 201336
May 12, 201341
May 5, 201343
April 28, 201343
April 21, 201343
April 14, 201340
April 7, 201341
March 31, 201343
March 24, 201343
March 17, 201342
March 10, 201342
March 3, 201344
February 24, 201345
February 17, 201343
February 10, 201347
February 3, 201349
January 27, 201349
January 20, 201350
January 13, 201348
January 6, 201351
December 30, 201250
December 23, 201249
December 16, 201253
December 9, 201252
December 2, 201250
November 25, 201253
November 18, 201254
November 11, 201252
November 4, 201257
October 28, 201254
October 21, 201253
October 14, 201254
October 7, 201260
September 30, 201257
September 23, 201257
September 16, 201254
September 9, 201253
September 2, 201255
August 26, 201254
August 19, 201257
August 12, 201257
August 5, 201260
July 29, 201259
July 22, 201257
July 15, 201254
July 8, 201254
July 1, 201260
June 24, 201260
June 17, 201256
June 10, 201261
June 3, 201269
May 27, 201264
May 20, 201264
May 13, 201261
May 6, 201266
April 29, 201262
April 22, 201264
April 15, 201262
April 8, 201267
April 1, 201269