This is the 3697th most frequent Russian word.
увеличили
"Increased" or "enlarged."
In this sentence, 'увеличили' denotes an action taken to make the productivity higher, implying an improvement or optimization.
Мы увеличили производительность нашего завода.
We increased the productivity of our factory.
Here, 'увеличили' refers to raising the quantity of items, in this case, tickets, making more available than before.
Они увеличили количество доступных билетов на концерт.
They increased the number of available tickets for the concert.
In this usage, 'увеличили' is applied to show that the cost or price was raised, signifying a change in financial value.