Centre for Science and Technology Studies Kolffpad 1 2333 BNLeiden Zuid Holland 31715273909 www.cwts.nl

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Indicator:

Year	P	IPP	SNIP	% self cit
1999	118	0.35	1.36	34.1%
2000	145	0.30	1.37	25.0%
2001	176	0.47	1.10	37.3%
2002	205	0.31	1.03	23.4%
2003	213	0.17	0.68	8.1%
2004	166	0.19	0.77	3.2%
2005	114	0.34	1.33	0.0%
2006	80	0.55	2.04	4.5%
2007	82	0.73	2.49	6.7%
2008	89	0.55	1.63	4.1%
2009	95	1.06	2.91	6.9%
2010	98	0.77	2.30	4.0%
2011	98	0.55	1.56	7.4%
2012	98	0.81	2.33	1.3%
2013	95	1.16	3.35	2.7%
2014	99	1.45	3.10	1.4%
2015	105	1.63	2.94	2.3%
2016	114	1.41	2.36	5.6%
2017	112	2.07	2.90	5.2%
2018	116	1.96	2.61	3.5%
2019	116	2.43	3.50	2.5%
2020	120	2.11	3.57	2.4%
2021	118	3.23	4.57	2.1%
2022	122	2.54	3.74	3.5%
2023	127	2.55	2.98	4.0%
2024	131	2.50	3.01	4.0%
2025	137	2.97	3.79	8.6%