The process of political polarization triggered an unprecedented increase in violence.

An unprecedented increase in death squad activities and government repression subsequently took place.

After years of unprecedented increases, housing prices seem to have reached a plateau - at least in the Northeast.

This was accompanied by unprecedented increase in people's movements.

However, during the late 1960s a dramatic and unprecedented increase in public concern for the environment occurred.

But even with this year's unprecedented increases, only half the city's students were proficient in reading and math.

The tax inequity between the upper 1 percent and the rest has undergone an unprecedented increase.

There seems to be an unprecedented increase in "Bhakthi" movement and spiritual tendencies of people during the last few years.

We are seeing an unprecedented increase in the spiral of terror.

The unprecedented increase in the price of oil risks bringing a whole sector to its knees.