Update src/streamlit_app.py

src/streamlit_app.py

@@ -96,13 +96,14 @@ import plotly.express as px
 years = sorted(df["year"].dropna().astype(int).unique())
 selected_year = st.selectbox("Select Year", years, index=len(years)-1)
 
-# 4. Year filter (centered, shorter)
-col1, col2, col3 = st.columns([3, 1, 6])  
-with col2:
+# 4. Year filter (shorter, above chart)
+col_empty, col_filter = st.columns([3,1])
+with col_filter:
     selected_year = st.selectbox(
         "Select Year",
         years,
-        index=len(years) - 1
+        index=len(years)-1,
+        key="year_filter"
     )
 
 # 5. Filter data for that year