I stopped at number 11. Each country is a little different. Here in the USA, pilots are required to keep a 'record' to show required currency. Plus whatever is needed to show the qualifications of each certificate and rating. As such, as such a pilot flying commercial operations doesn't need to do any records, as his employer keeps all that is required.
I use Aerolog Pro to keep time now, just so I can do insurance paperwork and applications. I no longer keep an official logbook. Much safer that way.