dax query when importing data

You would use power query and technically "M" not DAX, but yes. Edit your query or create a new query and connect to your data and in your "Year" column, click the drop down arrow and uncheck everything but 2016. The actual query will look something like:

let
    Source = Csv.Document(File.Contents("C:\temp\azureml\SF_Incident_Data_Prepped.csv"),[Delimiter=",", Columns=15, Encoding=1252, QuoteStyle=QuoteStyle.None]),
    #"Promoted Headers" = Table.PromoteHeaders(Source),
    #"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"IncidntNum", Int64.Type}, {"Category", type text}, {"DayOfWeek", type text}, {"Date", type date}, {"Time", type time}, {"PdDistrict", type text}, {"Resolution", type text}, {"Address", type text}, {"X", type number}, {"Y", type number}, {"Location", type text}, {"Resolved", Int64.Type}, {"Month", Int64.Type}, {"Year", Int64.Type}, {"Hour", Int64.Type}}),
    #"Filtered Rows" = Table.SelectRows(#"Changed Type", each ([Year] = 2016))
in
    #"Filtered Rows"

If you don't see all of your Year choices, you may have a little yellow box that says something like "List may be incomplete" and in that case you click the "Load more" link.