Rattitz Saga:N/A he wasn't around.
Saiyans Saga:He was at 18,000 the whole time until he became an ape then his powerlevel was around 45000.
Frieza Saga:When he first arrived he was 24,000. When he fought the Ginyu Force he was 30,000. When he fought Frieza he was near 350,000.
Cell Saga: He was at 22,000,000.