+/**
+ * Calculates town growth rate in normal conditions (custom growth rate not set).
+ * @param town The town to calculate growth rate for
+ * @returns Calculated growth rate
+ */
+static uint GetNormalGrowthRate(Town *t)
+{
+	/**
+	 * Towns are processed every TOWN_GROWTH_TICKS ticks, and this is the
+	 * number of times towns are processed before a new building is built.
+	 */
+	static const uint16 _grow_count_values[2][6] = {
+		{ 120, 120, 120, 100,  80,  60 }, // Fund new buildings has been activated
+		{ 320, 420, 300, 220, 160, 100 }  // Normal values
+	};
+
+	int n = CountActiveStations(t);
+	uint16 m = _grow_count_values[t->fund_buildings_months != 0 ? 0 : 1][min(n, 5)];
+
+	/* Use the normal growth rate values if new buildings have been funded in
+	 * this town and the growth rate is set to none. */
+	uint growth_multiplier = _settings_game.economy.town_growth_rate != 0 ? _settings_game.economy.town_growth_rate - 1 : 1;
+
+	m >>= growth_multiplier;
+	if (t->larger_town) m /= 2;
+
+	return m / (t->cache.num_houses / 50 + 1);
+}