Please answer using Excel or Excel OM

Fallon is a manager of a local print shop that is responsible for printing, binding, and distributing textbooks to post-secondary institutions. Due to recent budget constraints, Fallon been tasked with reducing expenses in the shop. She has been tracking her employee performance, and has put together the data for her department for which she is responsible: Book Binding Department Year Labour Raw Materials Output (per 1000 books) (1,000 hrs) (1,000 units) 0 350 200 19,200 1 335 185 19,575 2. 327 160 18,775 3 314 163 18,904 4 299 161 18,300 Has the productivity in the Book Binding Department increased? If so, by how much on average