diff --git a/backend/app.py b/backend/app.py
index c56b9b4..4faf5d1 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -1,6 +1,7 @@
 from flask import Flask, g, jsonify, request, json, Response, send_from_directory, abort
 from flask_cors import CORS
 import orjson, os
+import pandas as pd
 
 import datetime
 import time
@@ -47,7 +48,7 @@ def business_growth():
 
     # Parse args from request
     latest_date = request.args.get("latest_date")
-    country_names = request.args.get("countries")  # change this line
+    country_names = request.args.get("countries")
     cumulative_period_type = request.args.get("cumulative_period_type")
 
     # Open json locally
@@ -160,6 +161,32 @@ def get_json(filename):
     return jsonify(sorted_data)
 
 
+@app.route("/mangrove_data/<method>", methods=["GET"])
+def mangrove_data(method):
+
+    with open("../data/dev/final__wdpa_pid_mangrove_diff_stats.json", "rb") as f:
+        data = orjson.loads(f.read())
+
+    if method == "countries":
+        df = pd.read_json(json.dumps(data))
+        countries = df[["year", "country", "n_pixels", "diff", "cumulative_diff"]]
+        countriesAgg = countries.groupby(["year", "country"]).agg(
+            {"n_pixels": "sum", "diff": "sum", "cumulative_diff": "sum"}
+        )
+        countriesAgg["year0_pixels"] = (
+            countriesAgg["n_pixels"] - countriesAgg["cumulative_diff"]
+        )
+        countriesAgg["pct_diff"] = (
+            100
+            * (countriesAgg["n_pixels"] - countriesAgg["year0_pixels"])
+            / countriesAgg["year0_pixels"]
+        ).round(2)
+        countriesLatest = countriesAgg.loc[[2020]].reset_index().set_index("country")
+        return Response(
+            countriesLatest.to_json(orient="index"), mimetype="application/json"
+        )
+
+
 @app.route("/download/<filename>", methods=["GET"])
 def download_file(filename):
     try:
@@ -168,5 +195,16 @@ def download_file(filename):
         abort(404)
 
 
+@app.route("/cog", methods=["GET"])
+def serve_cog():
+    year = request.args.get("year")
+    pid = request.args.get("pid")  # change this line
+    dir = f"{FILES_DIRECTORY}/cog/{year}/"
+    try:
+        return send_from_directory(dir, f"{pid}.tif", as_attachment=True)
+    except FileNotFoundError:
+        abort(404)
+
+
 if __name__ == "__main__":
     app.run()