pre_text: (1) For a description and reconciliation of non-GAAP financial measures presented in this document, please see the Non-GAAP Financial Measures page, or visit the Black Knight Investor Relations website at https://investor.blackknightinc.com. (2) In 2019, the effect of our indirect investment in The Dun and Bradstreet Corporation was a reduction of Net earnings of $73.9 million primarily due to the effect of its purchase accounting adjustments, restructuring charges and other non-operating charges. In 2017, Net earnings includes a one-time, non-cash net tax benefit of $110.9 million related to the revaluation of our deferred income tax assets and liabilities as a result of the Tax Cuts and Jobs Act of 2017 (the “Tax Reform Act”).
table: (in millions, except per share data) 2019 2018 2017
table: Revenues $1,177.2 $1,114.0 $1,051.6
table: Adjusted Revenues(1) $1,177.7 $1,116.5 $1,056.1
table: Earnings before equity in losses of unconsolidated affiliates $182.8 $168.5 $254.2
table: Net earnings(2) $108.8 $168.5 $254.2
table: Net earnings margin 9.2% 15.1% 24.2%
table: Net earnings attributable to Black Knight $108.8 $168.5 $182.3
table: Net earnings attributable to Black Knight, per diluted share $0.73 $1.14 $1.47
table: Adjusted Net Earnings(1) $295.4 $277.9 $209.6
table: Adjusted EPS(1) $1.99 $1.87 $1.38
table: Adjusted EBITDA(1) $583.4 $542.5 $505.8
table: Adjusted EBITDA Margin(1) 49.5% 48.6% 47.9%
question: Analyse this data from a financial earnings document. What was the percentage change in the Net earnings margin between 2017 and 2019?