Update app.py

app.py

@@ -36,5 +36,5 @@ if st.button('Calculate Present Value'):
     plt.xlabel('Period')
     plt.ylabel('Cashflow')
     for i, cf in enumerate(cashflows):
-        plt.annotate(f'{cf:,.2f}', (i+1, cf), textcoords="offset points", xytext=(0,n), ha='center')
+        plt.annotate(f'{cf:,.2f}', (i, cf), textcoords="offset points", xytext=(0,n), ha='center')
     st.pyplot(plt)