	March 31, 2019			March 31, 2018
Gross carrying amount	$	59,782		$	50,361
Accumulated amortization		(21,927	)		(24,043	)
Net capitalized software costs	$	37,855		$	26,318

During the year ended March 31, 2019, we retired $13,453 of fully amortized capitalized software costs that are no longer being utilized by our client base. Amortization expense related to capitalized software costs was $11,338, $6,518, and $7,892 for the years ended March 31, 2019, 2018, and 2017, respectively, and is recorded as cost of revenue in the consolidated statements of net income and comprehensive income.

The following table presents the remaining estimated amortization of capitalized software costs as of March 31, 2019. The estimated amortization is comprised of (i) amortization of released products and (ii) the expected amortization for products that are not yet available for sale based on their estimated economic lives and projected general release dates.

For the year ended March 31,
2020	$	19,000
2021		11,800
2022		6,300
2023		755
Total	$	37,855