{"locations":[{"code":"CHN","name":"China","page":"https://macroscope.is/en/country/china/"}],"indicators":[{"id":"ev_car_stock","title":"Electric cars on the road (stock)","unit":"cars"},{"id":"ev_public_chargers","title":"Public EV charging points","unit":"charging points"}],"from_year":1950,"to_year":2100,"sections":[{"id":"dyn","title":"How the indicators changed","items":[{"kind":"dynamics","indicators":["ev_car_stock"],"text":"Electric cars on the road (stock): 1,900 cars in 2010, 44,000,000 cars in 2025.","data":{"indicator":"ev_car_stock","from":2010,"to":2025,"first":1900,"last":44000000}},{"kind":"dynamics","indicators":["ev_public_chargers"],"text":"Public EV charging points: 30,000 charging points in 2014, 4,680,000 charging points in 2025.","data":{"indicator":"ev_public_chargers","from":2014,"to":2025,"first":30000,"last":4680000}}]},{"id":"together","title":"What changed at the same time","items":[{"kind":"episode","indicators":["ev_car_stock","ev_public_chargers"],"text":"The fastest rise of \"Electric cars on the road (stock)\" was in 2015–2025: 300,000 cars → 44,000,000 cars. Over the same years: public EV charging points 59,000 charging points → 4,680,000 charging points.","data":{"focus":"ev_car_stock","from":2015,"to":2025,"start":300000,"end":44000000,"others":[{"id":"ev_public_chargers","from":2015,"to":2025,"start":59000,"end":4680000}]}}]},{"id":"links","title":"How the indicators relate","items":[{"kind":"relationship","indicators":["ev_car_stock","ev_public_chargers"],"text":"Electric cars on the road (stock) and public EV charging points (2014–2025, 12 years): levels are strongly related, in the same direction (r = 1.00); year-to-year changes are related too (r = 0.91). Changes line up from year to year too, which is more than a shared trend.","data":{"a":"ev_car_stock","b":"ev_public_chargers","from":2014,"to":2025,"years":12,"r_levels":0.999,"r_changes":0.914,"effective_pairs_changes":6,"changes_significant":true,"lag":null}}]}],"caveat":"Moving together in time does not prove a cause: incomes, cities, education and the era itself act on many indicators at once. These observations suggest where to look, not what causes what.","view_url":"https://macroscope.is/en/chart/?c=CHN&i=ev_car_stock,ev_public_chargers&from=1950&to=2100&past=1","how_to_read":"text: a ready sentence with numbers; data: the same numbers for calculations. The first indicator is the focus the others are compared with. Relationships are checked in levels (r) and in year-to-year changes (r_changes: the changes have their own linear trend removed; significance corrected for autocorrelation); lag is the shift at which changes line up best. UN errors: actual / projected − 1 for population, births and fertility, actual − projected for migration, life expectancy and mothers' age; IMF: actual − forecast. view_url opens the same view on the site."}