Statistics on R&D Activities in the Business Sector Coverage of the statistic Coverage of the statistic por years y sectors. Units: specified in variables ;Companies: units researched;Companies: companies who perform R+D;Public Administration: units researched;Public Administration: centres that perform R+D;Higher Education: units researched;Higher Education: centres that perform R+D;NPPI: units researched;NPPI: centres that perform R+D; 2008;53,360;9,662;905;428;161;131;251;65; 2006;46,922;8,479;619;401;145;122;140;52; 2005;42,480;7,419;650;357;143;115;123;52; 2004;24,964;5,599;499;315;113;104;98;49; 2003;24,234;4,839;657;273;102;92;194;44; 2002;26,016;4,707;316;239;83;83;184;37; 2001;11,709;4,240;281;193;66;66;158;71; Notes: 1) The data 'Higher education: centres that perform R+D' for 2003, 2004, 2005, 2006 and 2007 include other centres of higher education. The data 'Higher education: units researched' for 2003, 2004, 2005, 2006 and 2007 include other centres of higher education. The data 'Public Administration: centres that perform R+D' for 2003, 2004, 2005, 2006 and 2007 include public hospitals . The data of 'Public Administration: units researched' for 2003, 2004, 2005, 2006 and 2007 public hospitals. Source: National Statistics Institute