{"entity":{"iso2":"VN","iso3":"VNM","name":"Vietnam","slug":"viet-nam"},"indicator":{"licence":"CC BY 4.0 (World Bank Open Data)","slug":"sample-size","source":null,"source_url":"https://data.worldbank.org/indicator/BI.POP.TOTL.CV","title":"Sample size","unit":null},"observations":[{"date":"2007-01-01","value":496842.0},{"date":"2008-01-01","value":1100740.0},{"date":"2009-01-01","value":49431.0},{"date":"2010-01-01","value":688058.0},{"date":"2012-01-01","value":27866.0},{"date":"2014-01-01","value":27353.0},{"date":"2016-01-01","value":27131.0},{"date":"2019-01-01","value":601849.0}],"summary":{"latest_period":"2019-01-01","latest_value":601849.0,"max":1100740.0,"mean":377408.0,"min":27131.0,"of":80,"rank":2,"trend":"volatile"}}