Estadística sobre Actividades en I+D en el Sector Empresas
Sector de empresas: Gastos internos en I+D
Gastos en  I+D realizados con fondos propios por rama de actividad  (CNAE-74) y años.
Unidades: miles de euros

,2001,2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1985,1984,1983,1982,1981,1980,1979,1978,
Total,2.562.660,2.513.995,2.121.753,2.043.784,1.581.611,1.546.669,1.375.278,1.234.112,1.217.927,1.249.534,1.228.324,1.095.537,889.967,767.997,615.292,547.750,402.293,353.437,280.805,257.654,180.111,171.397,131.285,112.203,
Agricultura,11.881,16.043,16.884,46.687,17.664,15.777,13.956,..,13.541,8.835,9.941,6.166,6.275,12.128,7.825,5.121,1.130,607,54,186,343,307,156,78,
Energía y agua,53.921,36.595,59.847,65.907,81.401,52.763,97.334,..,64.326,60.324,47.414,47.943,62.313,48.466,32.377,33.056,23.199,21.276,18.078,15.356,11.377,9.784,8.564,6.719,
Extractivas y químicas,510.020,451.804,419.358,424.423,357.993,369.166,302.003,..,280.703,253.549,260.058,232.093,196.080,167.989,154.664,131.015,106.295,88.427,75.066,75.535,57.294,53.797,43.970,39.204,
Manufacturas metálicas,941.172,968.011,1.036.853,980.876,780.739,765.317,674.059,..,599.474,654.977,668.091,589.737,442.724,384.287,307.868,263.267,181.620,178.507,122.745,106.620,78.534,65.288,50.491,43.489,
Otras manufacturas,246.614,256.343,231.460,272.024,171.697,170.056,128.587,..,111.386,101.216,91.744,89.941,74.315,70.000,56.189,53.652,44.337,38.188,35.303,37.443,16.233,28.494,20.771,15.722,
Construcción,24.062,28.049,5.320,2.801,5.157,5.740,5.349,..,6.870,10.566,9.117,11.804,8.997,7.675,9.334,9.021,10.704,4.592,4.640,7.633,6.503,4.856,697,505,
Comercio y hostelería,11.003,14.792,17.630,3.017,2.200,355,2.013,..,986,3.714,397,793,..,..,..,..,..,..,..,..,282,559,78,66,
Transportes y comunicaciones,225.467,155.871,193.660,128.220,73.432,73.354,57.409,..,41.788,38.693,37.533,36.289,23.932,12.675,13.126,27.226,22.225,14.665,19.563,9.424,5.163,3.907,3.432,3.654,
Financieras y seguros,245.480,322.657,121.839,115.629,84.713,91.149,90.038,..,88.571,86.834,78.342,60.684,59.392,51.663,30.471,22.069,9.544,6.635,4.496,5.139,4.063,3.215,2.146,1.881,
Otros servicios,293.040,263.830,18.902,4.207,6.617,2.993,4.532,..,10.283,30.826,25.687,20.086,15.939,13.114,3.438,3.324,3.239,541,859,319,319,1.190,980,883,
Notas:
Los datos del año 1994 incluyen fondos de otras empresas. 
 Desde 1993 incluido, la correspondencia entre CNAE-74 y CNAE-93 se  publica en el anexo 1
Fuente: Instituto Nacional de Estadística