Add route /pibpercapita/years

src/libs/routes/pibpercapita.js

@@ -25,6 +25,12 @@ pibpercapitaApp.get('/year_range', (req, res, next) => {
     next();
 }, query, response('range'));
 
+pibpercapitaApp.get('/years', (req, res, next) => {
+    req.sql.from('ibge_pib').
+    field('DISTINCT ibge_pib.ano_censo', 'years');
+    next();
+}, query, response('years'));
+
 pibpercapitaApp.get('/income_level', (req, res, next) => {
     req.result = [
         {id: 1, name: "1º quintil – 20% menores"},