From f00362b21653925e58530a594fae266ef2947545 Mon Sep 17 00:00:00 2001
From: "R.Andres Castaneda" <acastanedaa@worldbank.org>
Date: Thu, 5 Mar 2020 14:44:59 -0500
Subject: [PATCH] drop old years in master pop update

---
 pcn_master_update.ado | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pcn_master_update.ado b/pcn_master_update.ado
index 78397c5..7a1f88a 100644
--- a/pcn_master_update.ado
+++ b/pcn_master_update.ado
@@ -552,6 +552,8 @@ qui {
     drop series_name col series
     drop if year > `maxyear'
     sort country year
+    
+    drop if year < 1977
 
     //------------Matrix with years available
     sum year, meanonly