diff --git a/src/main_window.py b/src/main_window.py
index bce5c66..71a65ac 100644
--- a/src/main_window.py
+++ b/src/main_window.py
@@ -132,8 +132,10 @@ class SIPPCompare(QMainWindow):
     # Show the output window - this func is called from calculate_fee()
     def show_output_win(self):
         # Refresh the results when new fees are calculated
-        self.output_win = OutputWindow()
-        self.output_win.display_output(self.results, 1)
+        if self.output_win is None:
+            self.output_win = OutputWindow()
+        years = self.output_win.get_slider_position()
+        self.output_win.display_output(self.results, years)
         self.calc_but.setText("Calculate")
         self.output_win.activateWindow()
         self.output_win.raise_()
diff --git a/src/output_window.py b/src/output_window.py
index 0b5cea1..358ed18 100644
--- a/src/output_window.py
+++ b/src/output_window.py
@@ -47,6 +47,9 @@ class OutputWindow(QWidget):
         self.save_csv_but.clicked.connect(self.save_csv)
         self.time_slider.valueChanged.connect(self.change_time)
 
+    def get_slider_position(self) -> int:
+        return self.time_slider.value()
+
     def display_output(self, results: list, years: int):
         self.results = results
         self.ax.clear()