Years with 3 generations in red.
Peak flight of first generation in blue.
Peak flight of second generation in brown.
Peak flight of third generation in green.

Week	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
May 1st week		1	0		0				1	0	7		0	0
May 2nd week		95	0		0		2		8	31	37	2	0	0
May 3rd week	5	96	18	0	0		0	0	485	56	32	231	0	4
May 4th week	32	254	7	32	40	43	14	5	57	64	134	4	0	4
June 1st week	51	18	149	67	154	269	2	10	113	95	108	14	8	10
June 2nd week	121	6	129	45	271	96	196	190	1	32	132	52	266	15
June 3rd week	103	5	111	126	420	94	1246	386	2	4	32	49	83	22
June 4th week	21	4	15	39	73	10	42	224	2	3	6	16	29	9
July 1st week	3	19	23	11	2	1	24	37	0	1	1	3	12	4
July 2nd week	3	193	4	34	0	1	1	25	2	1	0	2	2	4
July 3rd week	2	695	2	12	0	67	1	12	3	47	11	1	0	0
July 4th week	3	839	3	33	12	269	21	39	4	65	9	7	1	3
July 5th week	9	404	19	174	15	546	110	34	4	180	208	110	1	1
August 1st week	62	263	30	276	151	465	207	286	6	221	205	114	36	12
August 2nd week	115	413	214	633	176	141	847	469	10	103	250	173	111	35
August 3rd week	174	1925	187	417	135	85	853	231	31	241	103	105	46	38
August 4th week	85	2933	203	98	128	1204	584	196	26	326	166	102	30	50
September 1st week	54	922	76	127	15	1500	204	74	78	926	124	71	46	25
September 2nd week	37	360	26	105	5	462	107	59	121	273	36	66	189	5
September 3rd week	34	173	21	61	23	304	22	25	46	14	4	8	152	-
September 4th week	27	1	0	265	8	11	4	1	15	6	2		52	-
September 5th week	32	17	0	27	3		18	0	4		2		7	-
October 1st week	21	0	2					11			4		4	-
October 2nd week	1	0						0			0			-