1. The graph shows that the incidence of violent crime has in fact dropped in most US cities over the past decade.
2. As we can see from the chart, divorce increased phenomenally up until about 1990, but has since remained at a fairly constant level.
3. The sales figures for A amount to the combined sales figures for B and C. The profits over the past five years add up to an incredible 1.2 billion dollars.
4. The figures fluctuate between 1000 and 1100 units per year. The sales are expected to go up and down over the next few months.
5. The number of pandas in the reserve suddenly rose to over 200.
6. The birth rate decreased steadily after World War 2. The number of users rose smoothly throughout the decade.
7. Housing prices soar when there is a sudden increase in demand.
8. There was a slump in production between 1980 and 1985.
9. The number of Internet users should climb from 20 million in 2004 to 50 million in 2008.
10. Unless the situation changes, there will be a decline from 20 in 2006 to 12 in 2010.
11. January will witness the launch of two new products, which should increase revenue dramatically.
12. The population will remain stable thanks to the one-child policy.
13. The percentage of young people attending university reached a peak of 47% in 2003.
14. The number of people who could not read hit its lowest point in 2003.
15. The number of Internet users is on the rise/increase at the moment.