Table 17 Dynamics of fresh water use over the kinds of economic activities
in the
North
America
(km
3
/year)
|
|
|
||||||||||
|
1900
|
1950
|
1960
|
1970
|
1980
|
1990
|
1995
|
2000
|
2010
|
2025
|
||
| Population, millions |
217
|
263
|
316
|
371
|
423
|
453
|
487
|
543
|
595
|
||
| Irrigation area, th.ha |
4200
|
12700
|
17700
|
20800
|
27700
|
26600
|
29300
|
30300
|
33300
|
35400
|
|
| Irrigation |
39.3
|
147
|
192
|
232
|
276
|
272
|
283
|
288
|
300
|
308
|
|
|
24.6
|
82
|
107
|
133
|
160
|
158
|
167
|
170
|
177
|
182
|
||
| Rural use |
3.5
|
6.0
|
6.3
|
8.0
|
10.0
|
14.2
|
14.7
|
15.3
|
16.5
|
17.5
|
|
|
2.7
|
4.8
|
5.0
|
6.2
|
7.2
|
9.9
|
10.3
|
10.7
|
11.5
|
12.1
|
||
| Public supply |
4.8
|
22.5
|
33.9
|
44.3
|
57.3
|
68.3
|
73.2
|
77.7
|
86.1
|
96.3
|
|
|
1.0
|
4.9
|
5.8
|
9.6
|
12.0
|
9.7
|
11.9
|
12.8
|
14.3
|
16.1
|
||
| Industry |
21.8
|
103
|
164
|
248
|
306
|
269
|
284
|
293
|
307
|
325
|
|
|
0.7
|
3.7
|
5.9
|
9.9
|
14.4
|
14.5
|
17.0
|
18.0
|
18.9
|
20.2
|
||
| Reservoirs |
0.2
|
8.3
|
14.3
|
22.7
|
26.8
|
29.1
|
30.1
|
31.0
|
34.0
|
38.0
|
|
| Total |
69.6
|
286
|
410
|
555
|
676
|
653
|
685
|
705
|
744
|
786
|
|
|
29.2
|
104
|
138
|
181
|
221
|
221
|
236
|
243
|
255
|
268
|
||