The following table appears on the CAIN (Conflict Archive on the INternet) web site:
http://cain.ulst.ac.uk/ni/security/security.htm

Table NI-SEC-16: Percentage of PSNI police officers perceived to be Catholic (before, during, and after the Patten 50:50 recruitment policy 1), 1990 - 2018 (discontinuous 2)	
Year	% Catholic Officers	Source of data	% Catholic Population	
1990	7.75%	Hansard (1993)	 	
1991	7.72%	Hansard (1993)	41.50%	
1992	7.78%	Hansard (1993)	 	
1993		 	 	
1994		 	 	
1995		 	 	
1996		 	 	
1997		 	 	
1998 (31 Dec)	8.00%	RUC; Patten Report (table 12)	 	
1999		 	 	
2000	 	 	 	
23 Nov 2000 50:50 recruitment begins	
2001	8.10%	ECNI, Monitoring Return	43.76%	
2001 (Sep)	8.23%	NIO (2010)	 	
2002	8.40%	ECNI, Monitoring Return	 	
2003	10.50%	 	 	
2004	 	 	 	
2005	12.30%	ECNI, Monitoring Return	 	
2006 (1 Apr)	19.49%	 	 	
2007 (Mar)	21.43%	NIO (2010)	 	
2008	 	 	 	
2009	 	 	 	
2010 (1 Mar)	27.88%	NIO (2010)	 	
28 March 2011 50:50 recruitment ends	
2011 (May)	30.30%	 	45.14%	
2012 (1 Nov)	30.41%	PSNI; Internet Archive	 	
2013 (1 May)	30.63%	 	 	
2014 (4 Mar)	30.79%	PSNI; Internet Archive	 	
2015 (16 Feb)	30.74%	 	 	
2016	30.40%	ECNI, Monitoring Return	 	
2017 (1 Nov)	31.50%	PSNI Workforce Composition Statistics	 	
2018 (1 Jul)	32.10%	PSNI Workforce Composition Statistics	 	
Notes:	
1. The policy of recruiting Catholic and Protestand police officers on a 50:50 basis was one of the recommendations of the Patten Report (1999)	
2. Data on perceived religion has been obtained from the various sources (listed in the table alongside the relevant figure); see also source list below. (In the accompanying chart above the line representing the percentage of Catholic officers has been drawn between known points. Missing years are assumed to have been close to this line.)	
3. Estimate of Catholic population based on Table NI-REL-02.	
4. The data in this table is presented to accompany the Chart above.	
Sources:	
Equality Commission for Northern Ireland (ECNI). (Annual). Monitoring Returns. Belfast: ECNI. <https://www.equalityni.org/Publications>	
Hansard. (1993). Written Answers, Royal Ulster Constabulary, HC Deb 26 January 1993 vol 217 cc660-9W. London: HC. <https://api.parliament.uk/historic-hansard/written-answers/1993/jan/26/royal-ulster-constabulary>	
Independent Commission on Policing in Northern Ireland. (1999). A New Beginning: Policing in Northern Ireland - The Report of the Independent Commission on Policing in Northern Ireland, [Patten Report]., (9 September 1999). Belfast: ICPNI. <http://cain.ulster.ac.uk/issues/police/patten/patten99.pdf>	
Internet Archive WayBack Machine. (2018). RUC and PSNI archived webpages. <https://web.archive.org/web/*/http://ruc.police.uk/>	
Northern Ireland Office. (NIO). (2010). Explanatory Memorandum to Police (Northern Ireland) Act 2000 (Renewal of Temporary Provisions) Order 2010. 2010 No. 112. London: NIO. <http://www.legislation.gov.uk/nisr/2010/112/pdfs/nisrem_20100112_en.pdf>	
PSNI. (Annual). PSNI Workforce Composition Statistics. Belfast: PSNI. <https://www.psni.police.uk/inside-psni/Statistics/workforce-composition-statistics/>