Of the 1.9%, 1.5% is federal only and the remainder is a provincial top-up. So 1.5% is federal only, in the first year, and the remainder is an assumed matching from provinces.
I point out in that regard that Canada is fairly unique among major industrialized countries in that it's the only country where, effectively, the government sector at the federal level only accounts for half of the total government sector. Other countries tend to be either unitary in nature or have much smaller sub-national governments.