Energy service provider has kept track of demand for past years $($data is provided$).$ Year $2021$ Year $2022$

Month Gas Use $($A$)$ Month Gas Use $($A$)$

Jan $244$ Jan $230$

Feb $228$ Feb $245$

Mar $153$ Mar $247$

Apr $140$ Apr $135$

May $55$ May $34$

Jun $34$ Jun $33$

Jul $30$ Jul $27$

Aug $28$ Aug $26$

Sep $29$ Sep $28$

Oct $41$ Oct $39$

Nov $88$ Nov $86$

Dec $199$ Dec $188$ Using Seasonal forecasting model, provide forecasts. What is your conclusion. Please explain how to set up the model for seaonality inexcel and how to use the model to forecast $($seasonality without trend$)$