TABLE B-35. — Long-term trend In pond Indexes by strata and comparisons to 
average and previous year, May and July, tri-State area, 1965 
[Index numbers in thousands] 
Year 
Stratum 
Total 
East 
Central 
West 
May: 
1959.-. 
162 
109 
41 
313 
1960—.-. 
223 
397 
52 
672 
1961.- 
151 
105 
33 
289 
1962—.-. 
313 
348 
72 
732 
1963. 
375 
413 
80 
868 
1964.. 
193 
207 
60 
460 
1965.. 
255 
338 
84 
677 
Average, 1959 to 1965 - 
239 
274 
60 
573 
Percent change, 1965 
from 1 — 
Average- 
+ 6.7 
+ 23.4 
+ 40.0 
+ 18.2 
1964 . 
+ 32.1 
+ 63.3 
+ 40.0 
+ 47.2 
July: 
1959. 
213 
110 
73 
396 
1960-.-. 
309 
311 
116 
736 
1961.. 
166 
108 
77 
351 
1962.-. 
281 
231 
68 
579 
1963. 
245 
275 
99 
619 
1964. 
154 
211 
70 
435 
1965. 
205 
245 
69 
519 
Average, 1962 to 1965 - 
Percent change, 1965 
from— 
221 
241 
77 
538 
Average - 
- 7.2 
+ 1.7 
- 10.4 
- 3.5 
1964. 
+ 33.1 
+ 16.1 
- 1.4 
+ 19.3 
1 Percent change from previous year. 
NOTE: Due to a change in recording water areas in 1962, July 1962 
pond index is not comparable to previous counts. 
66 
