Star Wars adjusted for inflation:

Star Wars - $1,497,057,186
The Force Awakens - $1,006,872,847
The Empire Strikes Back - $880,005,730
Return of the Jedi - $847,248,129
The Phantom Menace - $822,741,783
The Last Jedi - $628,253,896
Rogue One - $556,450,789
Revenge of the Sith - $540,446,942
Attack of the Clones - $487,136,844
The Rise of Skywalker - $478,169,690 (still in theaters)
Solo - $213,767,512

Doesn’t seem like the sequels are any more cause for alarm than the prequels. TRoS should pass AotC soon. The prequel and sequel trilogies seem to each have an entry that exceeds expectations and another that falls below expectations. The first movies appear to perform the best. Solo seems to be the only real outlier and I liked Solo very much.