Electron Source	1990	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026	sum
FIELD EMISSION	0	0	0	2	1	3	5	12	28	53	52	83	134	120	177	167	260	300	445	590	702	856	1473	1776	2825	4581	6673	9550	12304	14913	18121	11263	531	88000
LAB6	0	0	0	0	0	0	0	0	3	18	4	13	7	45	20	10	39	37	41	49	98	90	102	191	320	132	184	73	152	120	151	81	0	1980
n/a	1	1	1	1	0	3	2	2	0	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	1	0	0	0	0	0	0	0	0	15
OTHER	0	0	0	0	0	0	1	3	1	0	0	0	0	0	2	0	7	2	2	0	0	5	5	1	5	23	32	58	111	131	130	66	0	585
TUNGSTEN HAIRPIN	0	0	0	0	0	0	0	0	13	4	3	10	15	10	15	21	19	16	5	14	15	19	10	7	8	0	26	6	16	12	3	2	0	269