The graphs represent completely different data and it is easy to misinterpret. Neither graph represents total percentage of online sales to Brick & Mortar stores accurately.
From the comments on Permuto site:
"The graph above is more descriptive of how e-commerce is replacing mail order catalogs for non-store purchases."
Source of data is probably:
Table 1022: Electronics Shopping and Mail-Order Houses–Total and E-Commerce Sales.
"Represents NAICS code 454110, which comprises establishments primarily engaged in retailing all types of merchandise using non store means, such as catalogs, toll free telephone numbers, or electronic media, such as interactive television or computer. ”
From the comments on Permuto site: "The graph above is more descriptive of how e-commerce is replacing mail order catalogs for non-store purchases."
Source of data is probably: Table 1022: Electronics Shopping and Mail-Order Houses–Total and E-Commerce Sales. "Represents NAICS code 454110, which comprises establishments primarily engaged in retailing all types of merchandise using non store means, such as catalogs, toll free telephone numbers, or electronic media, such as interactive television or computer. ”