(c)Time-Series Graph Productivit 120 100 80 The time-series graph shows the productivity of labor in U.s. businesses from 1950 to 2000 195019601970198019902000(c) Time-Series Graph 0 2 0 4 0 6 0 8 0 100 120 140 - 1950 1960 1970 1980 1990 2000 Productivity Index The time-series graph shows the productivity of labor in U.S. businesses from 1950 to 2000