Forms :: Filter Two Fields Using Combo Box

In Dec 2013 I created an Access table "Donations" that contains fields regarding charitable donations (Date, Donor, Amount). I use an Access form "Select Donor Form" to select a specific Donor (via combo box) from the table. Then an Access Query "Select Donor Query" uses the Donor selected from the combo box in the form to display all of the donations from that Donor for the year as an Access report.

Since I just created this Access table last month, it only had data from 2013. Now that we are in 2014, in preparation for when I run this report next December, I obviously need to modify "something" to clarify that I want the donations from a specified Donor for a particular year (i.e 2014, 2015, 2016, etc.).

I added a field to the Access table called "Year". I probably can derive the year from the already present "Date" field, but sadly, I don't know how to do that. I want to simply edit the existing combobox in the existing form to return Donors that have a record in the existing table where the Year = 2014. That way, the only changes I will need to make over time is to update which year I need and all of the Donors for that year will populate in the combo box.

Below is the Access macro belonging to the combo box in the form. I converted the macro to Visual Basic. What to add to select the Donor for a particular year. You can see that right now it is only selecting "Donor Name" without regard to which year the donor has a record.

'------------------------------------------------------------
' Combo3_AfterUpdate
'
'------------------------------------------------------------
Private Sub Combo3_AfterUpdate()
On Error GoTo Combo3_AfterUpdate_Err
DoCmd.SearchForRecord , "", acFirst, "[Donor Name] = " & "'" & Screen.ActiveControl & "'"

[Code] .....