A company has been monitoring the performance of its network routers over a 2-year period and observed the following outages: Year 1 experienced 4 outages, totaling 16 hours, and Year 2 experienced 2 outages, totaling 12 hours. Assuming the network was operational for a total of 17,520 hours across both years, what is the Mean Time Between Failures (MTBF) for the network routers?
2,920 hours
3,004 hours
2,752 hours
2,500 hours