Zillow, which tracks housing data, says its rent index rose 7.1% in June, the biggest year-over-year increase going back to 2015. Government efforts to support Americans hurt financially by COVID, including relief payments, have almost certainly helped tenants keep up with their rent.... That changed in the spring when pandemic-related restrictions were loosened following a ramped-up distribution of coronavirus vaccines.... The April-June increase snapped a string of four straight quarterly de