Spain: households +68% in 35 yrs (11.8M→19.8M), population only +29%. Avg family size: 3.3→2.5 people. 57% households are single/couple-only (was 36%). Real cost of kids: 📉 Income: -33.4% long-term 📈 Part-time work: +37.5% Source: INE/El País