Total crude oil exports from Canada in June were about 38,000 barrels per day less than the previous month, government data show, and on par with the average.

The Canadian National Energy Board released data from total oil exports through June, the last full month for which data are available.

Total exports for June were 2.8 million barrels per day, about 38,000 bpd, or roughly 1 percent, less than the previous month. So far this year, Canadian exports have averaged about 2.78 million bpd.

Canadian Prime Minister Stephen Harper has sought to add a layer of diversity to an energy export economy that depends almost exclusively on the United States.

Canadian exports to the United States for the second week of September are up about 27 percent compared with the same time last year.

For the week ending Sept. 5, the U.S. Energy Information Administration said Canada was the No. 1 oil exporter to the United States, sending an average 2.9 million bpd across the border for the week.