Broadway experienced its usual post-Christmas dip in B.O. last week — but it could’ve been worse.

Total sales for the 34 shows reporting grosses fell about $7.6 million to $20.7 million (or, taking into account the $1.37 million estimate for “Young Frankenstein,” $8 million to $22.1 million). That’s less of a dip than last year at this time, when sales sank $8.7 million to $19.5 million.

“Wicked” ($1,494,991) may have dropped more than $340,000 from the prior frame, but it still had no trouble staking out its usual spot at the head of the class. Along with “Jersey Boys” ($1,229,925), all three Disney tuners remained in the millionaires’ club last week, with previewing musical “The Little Mermaid” ($1,130,940) among the shows playing to capacity auds.

In the wake of the heady holiday time of nine-perf weeks and boosted demand for premium-priced tickets, week-to-week drops of hundreds of thousands of dollars were common.

Logically enough, the biggest post-Christmas fall was seen by the Noel-centric “Dr. Seuss’ How the Grinch Stole Christmas” ($647,223 for 12 perfs), which plummeted more than $800,000 in the final week of its second annual holiday engagement. “Mamma Mia!” ($816,353) was off by more than $600,000, while “Legally Blonde” ($759,972) and “Grease” ($669,303) both dropped by more than $450,000 each.

The only shows to climb last week were the generally well-reviewed revival of “The Homecoming” ($335,278), up about $25,000, and, rising $12,000 in its final week, the Lincoln Center Theater revival of “Cymbeline” ($230,226).

Some other plays on the boards held on to solid biz despite the declines. In its closing sesh, “Cyrano de Bergerac” ($905,526) barely dipped at all, and both “August: Osage County” ($545,944) and “Rock ‘n’ Roll” ($445,912) logged numbers that rep a strong showing for a non-musical.

Previewing play “November” ($362,137) was joined by two new offerings, the Roundabout’s production of “The 39 Steps” ($113,696 for four previews) and Manhattan Theater Club’s “Come Back, Little Sheba” ($87,185 for five perfs).

Like “Cyrano,” “Grinch” and “Cymbeline,” the revival of “Les Miserables” ($878,076) also shuttered last week, avoiding the coming winter weeks, when grosses traditionally continue to slump.