Year

Increase of urban land (km2)

Increase of urban land (%)

Annual urban land growth rate (km2/year)

Annual urban land expansion rate (%)

1978

53.3

77.9

3.3

4.9

1992

46.6

38.3

3.3

2.7

1999

81.7

48.5

11.7

6.9

2008

307.9

123.1

34.2

13.7