Wikipedia:How many films

This essay, WP:How many films, refers to the number of articles about motion picture films in the English Wikipedia, which contains more than 73,000 film articles. For example, by counting the entries in each year's category of "19xx films":


 * {&#123;PAGESINCATEGORY:1891 films}} =
 * {&#123;PAGESINCATEGORY:1901 films}} =
 * {&#123;PAGESINCATEGORY:1931 films}} =
 * {&#123;PAGESINCATEGORY:1951 films}} =
 * {&#123;PAGESINCATEGORY:1971 films}} =
 * {&#123;PAGESINCATEGORY:1981 films}} =
 * {&#123;PAGESINCATEGORY:1991 films}} =
 * {&#123;PAGESINCATEGORY:2001 films}} =
 * {&#123;PAGESINCATEGORY:2011 films}} =
 * {&#123;PAGESINCATEGORY:2021 films}} =
 * {&#123;PAGESINCATEGORY:2023 films}} =

However, to use the number in a calculation, get "|R" format:
 * {&#123;PAGESINCATEGORY:2001 films|R}} =

For the total, add all the years together: The expression of the separate counts for each year's category is the following set of added numbers:
 * Total of 124 years: 0

}}
 * Expression of adding category counts, from 1890 to 2014: {#expr: NaN
 * Expression of adding category counts, from 1890 to 2014: {#expr: NaN
 * }

Adding the category counts together is an effective method for estimating the total of film articles. However, some other articles might have been written which have not been tagged, yet, for the specific year of filming.


 * [ This essay is a rough draft to be expanded later. ]