| Amount ($m) | Company | Main product/service |
| 35,730 | |
| 24,922 | |
| 23,548 | |
| 16,554 | |
| 14,276 | |
| 14,245 | |
| 13,931 | |
| 8,973 | |
| 7,464 | |
| 5,998 | |
| 5,897 | |
| 4,816 | |
| 4,751 | |
| 4,715 | |
| 4,676 | |
| | Amount ($m) | Company | Main product/service |
| 4,504 | |
| 4,047 | |
| 3,909 | |
| 3,785 | |
| 3,608 | |
| 2,952 | |
| 2,858 | |
| 2,801 | |
| 2,670 | |
| 2,615 | |
| 2,454 | |
| 2,440 | |
| 2,405 | |
| 2,367 | |
| 2,296 | |
| 1,610 | |
| 1,220 | |
| 1,136 | |
| 1,044 | |
| 1,017 | |
| 918 | |
| 888 | |
| 878 | |
| 840 | |
| 700 | |
|