The following table shows the sales (millions of units) of smart speakers in Year 1 and Year 2:
| Brand | Year 1 | Year 2 |
|---|---|---|
| Amazon | 10.4 | 11.2 |
| 8.2 | 9.5 | |
| Apple | 5.1 | 6.3 |
| Baidu | 4.3 | 5.0 |
| Xiaomi | 3.0 | 4.1 |
| Others | 11.5 | 15.4 |
| Total | 42.5 | 51.5 |
The 3-firm concentration ratio in Year 1 was 55.8%.
Calculate the 3-firm concentration ratio in Year 2 in this market. You are advised to show your working.
