pre_text: Operational Highlights Altium achieved US$177.2 million in sales (a 23% increase) and US$171.8 million in product revenue (a 23% increase). The Board and Systems business revenue grew to US$126.8 million with all regions reporting positive results. EMEA grew revenue to US$44.6 million, an increase of 15% and continued the transformation of its business model to direct transactional sales in key markets. The America’s achieved revenue of US$50.9 million which was a 14% growth rate. China results were outstanding with revenue at US$19.8 million, a growth rate of 37%. The Altium focus on our business in China led us to open a new sales office in Beijing and to expand our existing sales centres in Shenzhen and Shanghai. The expansion of our footprint in China will enable us to increase our penetration of the market.
table: Consolidated
table: 2019 2018 Change
table: Product Sales US$’000 US$’000 %
table: Altium Designer licenses 65,157 53,088 23%
table: Altium Designer subscriptions 58,959 53,701 10%
table: Octopart search advertising 17,940 11,968 50%
table: TASKING licenses 13,536 10,432 30%
table: TASKING maintenance 8,324 4,706 67%
table: Altium Nexus 6,277 3,769 67%
table: Service sales 3,337 4,624 (28%)
table: Other 3,656 2,254 62%
table: Total Product Sales 177,216 144,541 23%
question: Analyse this data from a financial earnings document. What is the percentage of "Other" in total product sales in 2019?