This is where Jokercluster is at currently:
SHOWA SERIES
Gojira - 9.1%
Godzilla: King of the Monsters - 10.9%
Godzilla Raids Again - 10.0%
King Kong vs. Godzilla - 9.5%
Mothra vs. Godzilla - 11.9%
Ghidorah: The Three Headed Monster - 8.6%
Monster Zero - 6.1%
Godzilla vs. The Sea Monster - 14.9%
Son of Godzilla - 13.9%
Destroy All Monsters - 9.5%
Godzilla's Revenge - 11.8%
Godzilla vs. Hedorah - 24.1%
Godzilla vs. Gigan - 18.6%
Godzilla vs. Megalon - 12.9%
Godzilla vs. MechaGodzilla - 9%
Terror of MechaGodzilla - 11.5%
HEISEI SERIES
The Return of Godzilla - 18.4%
Godzilla vs. Biollante - 16.1%
Godzilla vs. King Ghidorah - 14.3
Godzilla and Mothra: The Battle for Earth - 15%
And upon closer research, multiple people are reporting Godzilla's screen time in the new movie at about 10:26-10:28 which puts...
Godzilla '14 - 8.5%
But we'll see if Jokercluster's conclusion is the same by the time he reaches the film. Just for the sake of consistency.