Luckily, we have finally returned to that pace until 2023. (if you include the underground portion of the Eglinton LRT, which for all intents and purposes is a subway) 27km of Subway in 10 years! (2013-2023) Now of course you could start the clock even later at the first opening date, (which is what I did for my previous average) and you get 3.9km per year average, over 7 years. If you take the last 27 years before 2023 like I did for 1980, you average just 1.2km a year. sad really. The average for 1980-2016 will have been just 0.2km of subway annually, or o.4 with the RT included. (which it probably shouldn't be considering it is being replaced)