| <table border="1"> | |
| <tr><td>Year</td><td>Population</td><td>Annual growth (%)</td></tr> | |
| <tr><td>1976</td><td>18,753</td><td>N/A</td></tr> | |
| <tr><td>1981</td><td>54,870</td><td>23.95</td></tr> | |
| <tr><td>1986</td><td>92,766</td><td>11.07</td></tr> | |
| <tr><td>1991</td><td>143,697</td><td>9.15</td></tr> | |
| </table> | |