{"entity":{"iso2":"PL","iso3":"POL","name":"Poland","slug":"poland"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"pupil-teacher-ratio-preprimary","source":"Stat Bulk Data Download Service, UN Educational, Scientific and Cultural Organization (UNESCO)","source_url":"https://data.worldbank.org/indicator/SE.PRE.ENRL.TC.ZS","title":"Pupil-teacher ratio, preprimary","unit":null},"observations":[{"date":"1971-01-01","value":19.7045},{"date":"1972-01-01","value":19.4853},{"date":"1975-01-01","value":26.5161},{"date":"1976-01-01","value":24.8675},{"date":"1977-01-01","value":24.2252},{"date":"1978-01-01","value":23.8904},{"date":"1979-01-01","value":24.1773},{"date":"1980-01-01","value":24.1158},{"date":"1981-01-01","value":23.3766},{"date":"1982-01-01","value":20.4907},{"date":"1983-01-01","value":18.6569},{"date":"1984-01-01","value":17.2496},{"date":"1985-01-01","value":17.3583},{"date":"1986-01-01","value":17.4159},{"date":"1987-01-01","value":17.8308},{"date":"1988-01-01","value":17.0725},{"date":"1989-01-01","value":16.3314},{"date":"1990-01-01","value":14.6276},{"date":"1991-01-01","value":13.644},{"date":"1992-01-01","value":13.6403},{"date":"1993-01-01","value":14.3309},{"date":"1994-01-01","value":14.1631},{"date":"1995-01-01","value":13.2269},{"date":"1996-01-01","value":13.2602},{"date":"1997-01-01","value":13.3143},{"date":"1998-01-01","value":13.1676},{"date":"2000-01-01","value":12.4336},{"date":"2001-01-01","value":12.0058},{"date":"2003-01-01","value":15.5959},{"date":"2005-01-01","value":17.1121},{"date":"2006-01-01","value":17.1842},{"date":"2007-01-01","value":17.5622},{"date":"2008-01-01","value":17.0927},{"date":"2009-01-01","value":16.9213},{"date":"2010-01-01","value":16.9709},{"date":"2011-01-01","value":14.6857},{"date":"2012-01-01","value":15.0716},{"date":"2013-01-01","value":14.9933},{"date":"2014-01-01","value":14.9157},{"date":"2017-01-01","value":12.9705}],"summary":{"latest_period":"2017-01-01","latest_value":12.9705,"max":26.5161,"mean":17.2914,"min":12.0058,"of":182,"rank":125,"trend":"falling"}}