Articulo gentileza de idealista
https://www.idealista.com/news/finanzas/hipotecas/2022/11/30/800421-por-que-una-hipoteca-a-tipo-fijo-es-ahora-mas-barata-que-una-variable#at_medium=email&at_emailtype=retention&at_campaign=1059&at_creation=news_daily_20221201&at_send_date=20221201&at_link=m-3-titular-node-800421&at_recipient_id=72473381430&at_recipient_list=3&utm_medium=email&utm_campaign=1059&utm_term=m-3-titular-node-800421