Household Budget Survey (HBS) Households with domestic service according to various personal characteristics of domestic service Percentage of households with domestic service, according to the age of the domestic service and the educational level of the main breadwinner of the household (reduced II) Units: percentage Total Uneducated or with 1st grade studies Secondary education, first and second cycle Higher education No data recorded Under 30 years of age 13.34 11.37 14.96 13.20 . Between 30 and 44 years of age 41.95 46.32 40.42 41.10 . Between 45 and 54 years of age 29.69 31.17 29.32 29.32 . 55 years old or over 13.23 9.82 13.77 14.28 . No data recorded 4.98 6.12 4.64 4.72 . Notes: .Data protected by statistical secrecy 1) Due to a lack of representation, estimates cannot be provided for the cells without data (..). 2) Households with more than one person hired for domestic service may be included in more than one category thus the sum of all the percentages for each one of the categories may be greater than 100%. 3) Illiterate persons are included in the 'Uneducated or with 1st grade studies' category Source: National Statistics Institute