I have a researcher looking for infant mortality rates for 1920, 1925, 1930 in Saskatchewan. I can only find recent numbers.
The information we have is not exactly the way your client would need it. What we do have available are older publications which date as far back as 1921 and onward. The client can be referred to the depository library as well. Would you have access to these? If not, I can see what is available digitally and send you some.