Table:
|  |  | Years Ended December 31, |  |
| --- | --- | --- | --- |
| Region | 2017 | 2018 | 2019 |
|  | % | % | % |
| Taiwan | 32.8 | 36.4 | 36.4 |
| Singapore | 20.6 | 16.4 | 16.2 |
| China (including Hong Kong) | 12.7 | 12.2 | 12.9 |
| Japan | 3.2 | 3.9 | 6.6 |
| USA | 12.2 | 15.6 | 13.5 |
| Europe | 9.6 | 8.3 | 4.7 |
| Others | 8.9 | 7.2 | 9.7 |
| Total | 100.0 | 100.0 | 100.0 |
Paragraphs:
Customers and Markets
Our primary customers, in terms of our sales revenues, include premier integrated device manufacturers, such as Texas Instruments and Intel Mobile, plus leading fabless design companies, such as Broadcom, MediaTek, Realtek, Qualcomm and Novatek. Although we are not dependent on any single customer, a significant portion of our operating revenues has been generated from sales to a few customers. Our top ten customers accounted for approximately 51.3% of our operating revenues in 2019. Set forth below is a geographic breakdown of our operating revenues in 2017, 2018 and 2019 by the location of our customers.
Question:
Top ten customers account for what percentage of total operating revenues in 2019?