Add actual number of cases to csv

src/main.rs

@@ -101,7 +101,13 @@ fn main() -> std::io::Result<()> {
             let date = date.to_string();
             let exponential_estimate = exponential_estimate.to_string();
             let gompertz_estimate = gompertz_estimate.to_string();
-            writer.write_record(&[date, exponential_estimate, gompertz_estimate]).unwrap();
+            let actual_infected = if (day as usize) < days.len() {
+                days[day as usize].infected.to_string()
+            } else {
+                "".to_string()
+            };
+
+            writer.write_record(&[date, actual_infected, exponential_estimate, gompertz_estimate]).unwrap();
         };
 
         if (day as usize) < days.len() {