Household Budget Survey (HBS) 
Variation coefficient (VC) of total expenditure according to different classification variables
Variation coefficient by CNO-11 employment (from 2012), (big groups) of main provider
Unidades: %
;2022;2021;2020;2019;2018;2017;2016;2015;2014;2013;2012;2011;2010;2009;2008;2007;2006;
        Total;1,43;1,3;1,41;1,3;1,26;1,22;1,2;1,2;1,19;1,18;1,19;1,15;1,14;1,19;1,13;1,17;1,32;
        1 Directors and managers;6,32;6,69;6,87;6,45;5,64;5,69;6,04;5,52;5,65;5,58;5,47;4,22;4,03;3,92;3,86;3,72;4,1;
        2 Scientific and intellectual technicians and professionals ;3,09;2,97;3,4;3,17;3,32;3,21;3,15;3,23;3,19;3,25;3,38;3,28;3,47;3,48;3,74;3,64;4,03;
        3 Technicians; support professionals;3,51;3,46;3,68;3,67;3,72;3,68;3,71;3,75;3,62;3,64;3,46;3,46;3,51;3,73;3,93;4,02;4,54;
        4 Accounting, administrative and other office employees;4,25;4,25;4,21;4,13;4,3;4,22;4,17;4,17;4,05;4,19;4,46;4,4;4,17;4,16;4,24;4,58;4,93;
        5 Workers in catering, personal, and protection services and salespersons;3,19;3,1;3,12;2,93;2,93;2,77;2,76;2,78;2,71;2,88;2,87;3,53;3,4;3,74;3,99;4,22;4,29;
        6 Skilled agricultural, livestock, forestry and fishing sector workers;7,92;8,46;7,77;7,11;6,85;7,24;7,36;7,7;8,51;7,42;7,46;8;7,62;8,25;7,16;7,59;7,66;
        7 Craftspersons and skilled workers in manufacturing and construction (except installation and machinery operators ;3,41;3,62;3,53;3,4;3,25;3,29;3,13;3,12;3,04;3,07;3;3,04;2,92;2,89;2,68;2,74;2,84;
        8 Installation and machinery operators and assemblers;4,02;4,52;4,35;3,97;4,19;4,07;3,95;3,88;3,77;3,84;3,8;3,7;3,61;3,58;3,6;3,55;4,02;
        9 Basic occupations;4,46;4,66;4,6;4,21;4;4,01;3,85;3,94;3,91;4,14;4,19;3,74;3,92;3,95;3,96;3,93;4,3;
        Other case;16,06;18,73;16,14;14,84;14,73;13,74;13,67;14,71;15,26;12,92;14,27;14,3;14,91;14,89;16,55;12,72;14,57;
Notas:
Con fecha 18 de Marzo se han corregido los datos de esta tabla
Due to the lack of representativeness, estimates of the cells without data cannot be provided (to points)
The categories ¿Large Group 0¿ (Armed forces) and ¿No data recorded¿ are included in ¿Other case¿.
As of 2012, the new Classification of Occupations (CNO 2011) was incorporated, hence there will be categories that are not comparable with previous years where the classification CNO-94 was used. 
Households with employed main breadwinner.
Fuente: