pre_text: NOTE 7 – PROPERTY AND EQUIPMENT Property and equipment consist of the following (in thousands): Depreciation expense was $8.6 million, $8.0 million, and $8.4 million in fiscal years ended February 28, 2019, 2018 and 2017, respectively. Fixed assets not yet in service consist primarily of capitalized internal-use software and certain tooling and other equipment that have not been placed into service.
table: February 28,
table: 2019 2018
table: Leasehold improvements $3,522 $3,157
table: LoJack system components and law enforcement
table: tracking units 20,326 20,558
table: Plant equipment and tooling 13,078 16,842
table: Office equipment, computers and furniture 11,553 14,206
table: Software 31,349 31,427
table: 79,828 86,190
table: Less accumulated depreciation and amortization (58,641) (69,585)
table: 21,187 16,605
table: Fixed assets not yet in service 5,836 4,657
table: $27,023 $21,262
question: Analyse this data from a financial earnings document. How much do the top 3 property and equipment add up to in 2018?