A multinational corporation is planning to expand its network infrastructure to accommodate a projected increase in data traffic due to the launch of a new cloud-based application. The current network can handle a maximum throughput of 1 Gbps, and the company anticipates that the new application will increase traffic by 50% over the next year. Additionally, the company expects a 20% annual growth in overall network traffic due to other business activities. If the company wants to ensure that the network can handle the increased load without performance degradation, what should be the minimum throughput capacity of the network after one year?