11.  The level of unemployment has increased.

12.  The level of violence has increased.

13.  The market demand curve has increased.

14.  The price of home ownership is increasing.

15.  The prison murder rate has increased.

16.  Water usage is increasing.

17.  The powers of the European Commission to regulate competition are increasing.

18.  The differentiation between the two product ranges will increase.

19.  The worth of the stocks has increased.