Table:
Fiscal Years

2019	2018	2017

Revenue by geography:

Asia Pacific (1)	$3,049	$4,905	$5,810

Europe	2,459	1,280	2,015

North America (2)	4,802	6,444	4,324

Total revenue	$10,310	$12,629	$12,149

Answer the following question based on the given table and text, produce your answer and, if helpful, briefly explain your calculation. Conclude with JSON: {"answer": ["ANSWER"], "scale": "SCALE"} ("scale" = "" if no unit).

Text:
The following is a breakdown of revenue by shipment destination (in thousands):
(1) Asia Pacific includes revenue from China $1.1 million or 11% and Japan of $1.8 million or 17% of total revenue in 2019 and $1.8 million or 15% and $1.6 million or 12% of total revenue in 2018, respectively. In 2017, revenue from China and Japan were $1.3 million or 11% and $1.5 million or 12%, respectively.
(2) North America includes revenue from the United States of $4.7 million or 46% of total revenue in 2019, $6.4 million or 50% of total revenue in 2018 and $4.2 million or 34% of total revenue in 2017.

Question: What is the average revenue from North America in 2018 and 2019?

(6,444 + 4,802)/2 , therefore {"answer": "5623", "scale": "thousand"}