pre_text: Pro forma consolidated results of operations The following unaudited pro forma financial information presents combined results of operations for each of the periods presented as if the acquisitions of MOI and GP had been completed on January 1, 2018. The pro forma information includes adjustments to depreciation expense for property and equipment acquired and amortization expense for the intangible assets acquired and the elimination of transaction expenses recognized in each period. Transaction-related expenses associated with the acquisition and excluded from pro forma income from continuing operations were $1.0 million for the year ended December 31, 2019. There were no transaction-related expenses associated with the acquisition for the year ended December 31, 2018. The pro forma data are for informational purposes only and are not necessarily indicative of the consolidated results of operations or the combined business had the acquisitions of MOI and GP occurred on January 1, 2018, or the results of future operations of the combined business. For instance, planned or expected operational synergies following the acquisition are not reflected in the pro forma information. Consequently, actual results will differ from the unaudited pro forma information presented below.
table: Years Ended December 31,
table: 2019 2018
table: (unaudited)  (unaudited)
table: Revenue $72,576,902 $60,249,896
table: Income from continuing operations $6,912,802 $1,559,008
question: Analyse this data from a financial earnings document. What is the change in Revenue from December 31, 2018 and 2019?