Update app.py

app.py

@@ -60,10 +60,10 @@ acquisition_data.columns = ['Year Acquired', 'Building Count']
 #     height=400
 # )
 bar_chart = (
-    alt.Chart(data)
+    alt.Chart(acquisition_data)
     .mark_bar()
     .encode(
-        x=alt.X('Year Acquired:Q', title='Year Acquired', sort='-x'),
+        x="Year Acquired:Q",
         y=alt.Y("Building Count:Q", title="Number of Buildings"),
         color=alt.condition(click, color, alt.value("lightgray")),
         tooltip=['Year Acquired', 'Building Count']