Annual Labour Cost Survey Proportion of centers and workers by modifications in collective agreements By activity sectors. Units: absolute values ,TOTAL,,Total modifications,,Just pay scheme,,Not modifications or not subject to agreement,, ,Workers,Centers,Workers,Centers,Workers,Centers,Workers,Centers, Sector total, 2013,100.00,100.00,8.26,3.21,3.80,1.88,91.74,96.79, 2012,100.00,100.00,11.15,4.14,5.78,2.67,88.85,95.86, 2011,100.00,100.00,6.18,3.41,4.26,2.30,93.82,96.59, 2010,100.00,100.00,8.28,3.85,6.51,2.74,91.72,96.15, Industry and Construction, 2013,100.00,100.00,7.21,3.26,4.25,1.74,92.79,96.74, 2012,100.00,100.00,9.33,4.70,5.90,2.88,90.67,95.30, 2011,100.00,100.00,6.97,3.99,4.53,2.68,93.03,96.01, 2010,100.00,100.00,6.14,3.34,3.74,2.39,93.86,96.66, Services, 2013,100.00,100.00,8.53,3.20,3.69,1.91,91.47,96.80, 2012,100.00,100.00,11.65,4.00,5.75,2.62,88.35,96.00, 2011,100.00,100.00,5.94,3.25,4.19,2.19,94.06,96.75, 2010,100.00,100.00,8.96,4.01,7.39,2.84,91.04,95.99, Notes: Source: National Statistics Institute