Inflation adjusted domestic take for TLJ:
http://www.boxofficemojo.com/franchises/chart/?id=starwars.htm
1 Star Wars Fox $1,274,614,700 $307,263,857 5/25/77
2 Star Wars: The Force Awakens BV $965,467,800 $936,662,225 12/18/15
3 Star Wars: Episode I - The Phantom Menace Fox $757,494,400 $431,088,295 5/19/99
4 Return of the Jedi Fox $723,181,600 $252,583,617 5/25/83
5 The Empire Strikes Back Fox $704,239,800 $209,398,025 5/21/80
6 Star Wars: The Last Jedi BV $578,595,600 $578,595,635 12/15/17
7 Rogue One: A Star Wars Story BV $539,743,700 $532,177,324 12/16/16
8 Star Wars: Episode III - Revenge of the Sith Fox $529,768,500 $380,270,577 5/19/05
9 Star Wars: Episode II - Attack of the Clones Fox $464,469,500 $302,191,252 5/16/02
10 Star Wars (Special Edition) Fox $268,985,300 $138,257,865 1/31/97
11 The Empire Strikes Back (Special Edition) Fox $131,513,600 $67,597,694 2/21/97
12 Return of the Jedi (Special Edition) Fox $88,464,300 $45,470,437 3/14/97
13 Star Wars: Episode I - The Phantom Menace (in 3D) Fox $48,992,400 $43,456,382 2/10/12
14 Star Wars (Re-issue) Fox $47,007,900 $15,476,285 8/13/82
15 Star Wars: The Clone Wars WB $43,731,600 $35,161,554 8/15/08
16 The Empire Strikes Back (Re-issue) Fox $40,325,500 $13,276,241 11/19/82
17 Return of the Jedi (Re-issue) Fox $28,304,600 $11,252,123 3/29/85
18 Attack of the Clones: The IMAX Experience (IMAX) Fox $13,003,900 $8,485,488 11/1/02
TLJ will probably end around $600 million or so domestic, which is may a tad lower than what Disney would want but I don't think it's that terrible of a result.
It would be probably be closer to $700 mill if Rogue One didn't come out last year and you kept the franchise fresher and allowed hunger to build up.
I tend to prefer to use the general rate of inflation rather than ticket inflation. The problem with using ticket inflation is it's a double edged sword for modern movies. Yes, a single ticket eats up more money, but the downside to that is because movie tickets are a more pricey proposition today most people rarely see the same movie twice anymore, let alone 3/4/5 times as was common in the 70s/80s/90s/earlier part of 2000s.
And yes, Empire is a fairly large drop off from ANH in both original release and for the Special Editions too.
