find the data "

Date	Order_Demand
9/4/2012	100
8/29/2012	200
10/1/2012	200
10/2/2012	200
10/1/2012	200
2/8/2013	200
7/9/2013	500
12/13/2013	500
10/15/2013	200
6/3/2013	200
11/18/2013	200
3/27/2013	100
9/18/2013	100
11/25/2014	400
11/25/2014	100
1/9/2014	200
4/4/2014	200
7/15/2014	200
9/3/2014	100
1/29/2014	200
6/5/2015	100
6/5/2015	200
9/16/2015	500
6/2/2015	200
4/24/2015	200
12/15/2015	100
1/28/2015	100
3/10/2016	200
10/14/2016	300
11/4/2016	300
7/29/2016	200
3/8/2016	200
7/27/2016	200
11/28/2016	200
2/15/2016	100
6/2/2016	200

Need to summarize the demand data from 2012 to 2016 in a monthly time span, analyze the demand pattern, make forecasts for the same time span, and compare the forecast models to find out the appropriate one.

Q1. ***Application of forecasting methods (namely, moving average, exponential smoothing, linear trend and Holt's method)