node number evolution statistic? Im looking for a way to store the TOTAL number of nodes published on my drupal 6 web site at a particular month of the year so I can generate some curve from it :

timestamp | total node nb type x
2013/01   | 96
2013/02   | 100 (I mean 96+4, cumulative)
2013/03   | 120
[...]


the need seems simple to me, but I cant find any statistics module that cares about this. also the need is really simple compared to the features these modules offer.
I could write some piece of code about this using CRON and some requests to write such a table. maybe something with views count + cron.

but it certainly already exists somewhere as a module ?

thanks for any pointers/recipes.

jerome
Do you really need the publishing date? or just the created date?

If you need the former, well that date isn't tracked by core - http://drupal.org/node/1838918

You could try a contrib module to start tracking that for you... http://drupal.org/project/publication_date

If you're not worried about deleted nodes you can just do what you're after by running a query to count all the nodes that have a created date lower than month X. Or just get all nodes back, and then loop over them in php, successively incrementing counters for each month for your graph.

Otherwise, yeah you're going to have to do something with cron and get snapshots over time. I haven't heard of an existing offering for this in contrib.