Journals and articles.

There were about 28,100 active scholarly peer-reviewed English-language journals in late 2014 (plus a further 6450 non-English-language journals), collectively publishing about 2.5 million articles a year. The number of articles published each year and the number of journals have both grown steadily for over two centuries, by about 3% and 3.5% per year respectively, though there are some indications that growth has accelerated in recent year (from STM Association report)