Sentence:  Taking a retrospect, then, of fourteen years preceding 1860, and making two periods of seven years each, the value of the exports of the <WSD>produce</WSD> or manufactures of this country to Australia has been, for the annual average of the first seven years, 1846-52, 2½ millions sterling; while for the second period, 1856-59, the annual average has been 11 millions. 
Meaning of the word marked with <WSD> tags:  Harvested agricultural goods collectively, especially vegetables and fruit, but possibly including eggs, dairy products and meat; the saleable food products of farms.