Figure 1
From: A cross disciplinary study of link decay and the effectiveness of mitigation techniques
Growth of scholarly online resources. Not only are the number of URL-containing articles (those with "http" in the title or abstract) published per year increasing (dotted line), but also the percentage of published items containing URLs (solid line). The annual increase in articles according to a linear fit was 174 with R2 0.97. The linear trend for the percentage was an increase of 0.010% per year with R2 0.98. Source: Thomas Reuter's Web of Science