Spain's residential real estate mortgages are expected to be more stressed in the future as unemployment continues above 20%, and with the austerity policies of the government. Experts say that the 2.6% of residential mortgages that are 90 days past due - down from 3.1% last year- does not reflect the true condition of borrowers. Banks have encouraged low interest deals with borrowers and found ways to keep them from becoming delinquent by working with borrowers. Most loans are on first homes and on average for 60% of the value of the property. Even if a debtor defaults he keeps the mortgage debt for 15 years, which discourages default. Unemployment is lower than the 20% figure because of jobs in agriculture and services that are not reflected in the statistics. These factors have mitigated the extent of residential mortgage defaults. But a continued downturn in the economy, experts say, will show up in higher number of residential mortgage defaults in the future.