I have compiled the licence #'s for Idaho and here they are.
RES fishing 1993-102733
res combo 1993 110954
94 -110539
94-109976
95-110853
95-111007
96-107812
96-113241
97-109781
97-107991
98-116022
98-105549
99-117587
99-105182
00-116223
00-101950
01-114915
01-93636
02-110720
02-90400
03-108077
03-86037
04-109541
04-84886

Junior fish!!!! this one is important!!
93-12697
94-14084
95-14719
96-15309
97-15507
98-15279
99-15205
00-14120
01-12820
02-11794
03-11365
04-10595
20% fewer kids bought a lic. in 04 as did in 93 and a full 1/3 less than the peak of 97

Non-res season
93-22780
94-21849
95-21009
96-20756
97-20270
98-21050
99-21808
00-20077
01-17308
02-17240
03-17154
04-17379
non res 1 day stamps (this is almost all flyfishers
93-89211
94-95568
95-99207
96-146206
97-147686
98-156251
99-160530
00-146127
01-135216
02-129314
03-122016
04-119633

I don't think I can draw any hard conclusions from this data But I do see a trend. Lic. sales peaked both res and non in 99 about the same time as the economy peaked. and has slid from there.In the same time frame hunting lic. sale is up slitly
ALTHOUGH JR. lic. sales is off a bit in hunting it is WAY off in fishing I would be very intrested in real #'s from some of the other states. During the time of the study I did,the population in Idaho increased about 20%.

Rich