Hank Pym (Antman,Giantman, Goliath, Yellowjacket, Doctor Pym, Wasp II)
Swordsman (joined Avengers #20, membership taken away when discovered he betrayed them. Reformed and reinstated. Recommended full membership from Thor)
Two Gun Kid (My thought he was granted Avenger status when he went into battle with Thor and Hawkeye. Possibly even Moondragon granted full status.)
Captain Marvel (Ms. MARVEL, Warbird)
Wonderman (Accepted on probationary member Avengers #9, betrayed team and status was taken away. Reinstated as probationary member after battle with Gravitron. )
Spectrum (Captain Marvel, Pulsar, Photon)
Iron Patriot (Ironman, War Machine) (Was told during first Secret Wars though on leave he was with the Avengers, this may have given him official status or just to clarify among the other heroes. It was revealed later on Prof Xavier and Reed Richards knew of Ironman's identity.)
Gilgamesh (Hero, Hercules, Forgotten One)
Rage (status in question. When found out he was underage he had his membership downgraded to Avenger in Training. Later he hijacked a quinjet and he was expelled. It might have been reinstated after Morgan Le Fay battle.)
Sandman (left in a huff, has been stated in other posts he was only a reserve, never a full member. My thought an Avenger is an Avenger. Plus there were two times he status was upgraded to full when filling in during the substitute Avenger status was implemented. When the Avengers battled the Sinister Six Captain America offered him reinstatement. His mind was scrambled by the Wizard. This has never been addressed.)
Spider Woman (Madame Web, Arachne)
Triathalon (3D Man)
Jack Of Hearts
Sentry (does anyone know if his status was taken away for his role in Siege?)
Protector (was his status taken away for his betrayal)
I listed, but wasn't sure of Cho and Stature due to there age. I didn't list Agent 13 and Agent Hill, thinking it was more of an assignment. Ironman (Teen Tony, though listed as honorary I thought had full status. I felt the original Captain Marvel was given reserve status.)
That gives them 100 members.
One thing I'm fuzzy on is why members of Cage's unofficial outlaw team are considered Avengers when the Avengers Resistance, led by Justice and Tigra, is not. Their mission statements were exactly the same. Both had official Avengers on the roster. And there is a story arc in the Mighty Avengers where Hank's team, Luke's team, and the Avengers Resistance assemble together to fight the Unspoken.
That doesn't mean we have to put Slapstick or Debrii front-and-center, but I think Komodo and Diamondback would be fine Avengers. Ultra Girl possibly too.