Thank you, Ann.
Let me add my welcome to everyone on this call. In the first quarter GTV increased 13% with broad strength across all regions.
We continue to see very strong contribution from our regional sales teams, somewhat offset by acute supply challenges in our Strategic Accounts Group. Recall that our SAG team services large fleet owners, and these customers are the most impacted by new and used equipment tightness.
We continue to see robust increases in mixed adjusted prices of equipment, offset by lower lot volumes and unfavorable mix.
We are pleased with the first quarter and see this as a very strong result given OEMs are still facing challenges with production and delivery lead time and overall supply of used equipment continues to be constrained. Both total reported revenue and service revenue increased 19% compared to last year. On an organic basis, excluding the impact from SmartEquip, total service revenue increased approximately 17%. Total service revenue continues to exceed total GTV growth in line with our evergreen model.
Our other services segment continues to put up robust growth as well increasing 29% in the quarter and up approximately 15% on an organic basis excluding SmartEquip revenues.
We continue to see strength in Ritchie Bros. financial services growing 71% in the quarter. This growth was partially offset by lower ancillary revenues of logistics, refurbishment and repair due to lower unit volumes and overall mix of equipment.
Our non-GAAP adjusted operating income increased 54% on strong revenue performance with flow-through to earnings partially offset by higher SG&A cost. It is also important to note that the sale of our Bolton yard was completed this quarter. And we posted a pre-tax gain on this transaction of $169 million. This gain in combination with our very strong operational performance drove $1.60 reported diluted earnings per share number, generating the highest quarterly earnings results in the company's history.
Turning to auctions and marketplaces. A&M service revenue increased 17% and our take rate for A&M service revenue as a percentage of total GTV came in at a robust 13.9% for the quarter. Of note, our Canadian GTV saw strong growth, in part driven by a healthy contribution within our agriculture sector and our on-the-farm auction events.
As we've noted in the past, inventory sales tend to be lumpy and driven by consigner preferences. And in the first quarter inventory sales increased 19% with strength in the U.S. partially offset by lower volumes in Canada. Inventory returns remain strong at 11.7%.
Our sales teams are doing a great job finding equipment in a tough equipment supply environment. And overall we are pleased with our revenue rate performance as both profit on inventory sales and service revenues improved versus prior year. Cost of services plus SG&A was up 9%. With total SG&A increasing 11% compared to last year. Note that cost of services less the incremental contribution of SmartEquip would have been roughly flat year-on-year. Total SG&A increased about 11%.
However this includes $5.4 million in share-based payments and $2.3 million in non-recurring advisory legal and restructuring costs. Once you look at SG&A, excluding these highlighted items, our core SG&A increased about 8%. This increase was primarily driven by investments to fuel our accelerated growth initiatives, such as our new sales coverage model, and our new local yard strategy, as well as our partnership with Thoughtworks to advance our modern architecture initiatives, as we continue our journey to transform to a marketplace.
We also saw costs pick up in travel expenses as the team gets back on the road. We remain very diligent on costs and we are making prudent investments that unlock the long-term potential of our strategic vision.
We will continue to invest for organic growth, build out our technology architecture, which underpins our marketplace strategy, and highlight that we are not immune from current inflationary pressures.
As such, we expect our SG&A in the second quarter of 2022 ex share-based payments, one-time non-recurring charges to be between $128 million to $133 million.
Our cash flow remains very robust with 12 trailing months operating free cash flow of $446 million, which is 193% of our non-GAAP adjusted net income, delivering well above our stated evergreen model targets. At the end of the quarter, our adjusted net debt to trailing 12 months non-GAAP adjusted EBITDA reduced to 0.5 times as we use proceeds received from the Bolton transaction to repay outstanding draws on our revolving credit facilities. And subsequent to quarter-end, on May 4, we redeemed at par our deal contingent notes associated with the Euro Auction transactions with accrued interest to that date.
For modeling purposes, we currently project interest expense of $18 million in the second quarter, with a run rate of approximately $12 million starting in the third quarter of 2022 based on currently forecasted organic operating, overall a very good quarter across all financial dimensions. And with that, I will hand it back over to Ann.