pre_text: (1) Includes construction costs capitalized related to build-to-suit facilities: As of March 31, 2019 and 2018, the U.S. build-to-suit facility includes company-funded building improvements of $5.2 million and $4.5 million, respectively. In March 2019, the Company derecognized the U.K. build-to-suit facility upon substantial completion of construction. See Note 12 for further details.
table: As of March 31,
table: 2019 2018
table: U.S. build-to-suit facility $47,001 $43,925
table: U.K. build-to-suit facility — 31,240
table: Less: Accumulated depreciation (5,164) (753)
table: $41,837 $74,412
question: Analyse this data from a financial earnings document. What is the change in U.S. build-to-suit facility from March 31, 2018 to March 31, 2019?