Please help me in solving the problem...

ABC ltd. has implemented a scheme where employees will be given 6000 shares if they are in three(3) years of service,

out of these 6000 shares, 1000 shares are to be issued after 1 year, 2000 shares are to be issued after 2 yrs of service and 3000 shares are to be issued after 3 yrs....

Fair values

1 year = 30

2 year = 28

3 year = 25

Compute annual expense to be recognized every year and also journalise the above for each year.....

Please give all the calculation step by step for all the 3 years as i need to understand in detailed...

your response will be appreciated...