You forgot one, I do not have the stats but Tzav is extremely rare. On non-leap years it is always Shabbos Hagadol, on leap years it is often zachor or Parah (in Yerushalayim it can be Shushan Purim in which case it is not read there but is everywhere elese). I would not be surprised if it is one of the rarest – far more rare than Pinchas.
