Table:
December 31,

2019	2018	2017

Beginning balances	$36,836	$42,432	$49,904

Deferral of revenue	45,040	40,003	46,193

Recognition of deferred revenue	(41,034)	(45,599)	(53,665)

Ending balances	$40,842	$36,836	$42,432

Answer the following question leveraging the following table and its related text, answer the question. You may include your reasoning, but be sure to finish with a JSON block exactly like {"answer": ["ANSWER"], "scale": "SCALE"} (leave "scale" empty if not applicable).

Background:
5. Balance Sheet Components
Deferred Revenue
Deferred revenue relates to performance obligations for which payments have been received by the customer prior to revenue recognition. Deferred revenue primarily consists of deferred software, or amounts allocated to mobile dashboard and on-line apps and unspecified upgrade rights. Deferred revenue also includes deferred subscription-based services. The deferred software and deferred subscription-based service performance obligations are anticipated to be recognized over the useful life or service periods of one to eighteen months.
Changes in the total short-term and long-term deferred revenue balance were as follows (in thousands):

Question: What is the percentage change of the ending balance from 2017 to 2018?

((42,432-36,836)/42,432) * 100, therefore {"answer": "13.19", "scale": "percent"}