In the mid-to-late 1990s, however, the Canadian dollar fell to record lows in value to against the US dollar. Cheaper Canadian primary products such as lumber and oil could be bought tariff-free by Americans, and Hollywood studios sent their crews to film many movies in Canada due to the cheap Canadian dollar (see "runaway production" and "Hollywood North"). The removal of protective tariffs meant that market forces, such as currency values, have a greater effect on the economies of both countries than they would have with tariffs.