The link you provided leads me to a page where it reads:
"Wikipedia does not have an article with this exact name. Please search for Luftwaffe serviceable aircraft strengths in Wikipedia to check for alternative titles or spellings.
Search for "Luftwaffe serviceable aircraft strengths" in existing articles.
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The sentance "Please search for..." is a link that one can follow. It provides search results:
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Content pagesMultimediaHelp and Project pagesEverythingAdvancedResults 1–20 of 66 for Luftwaffe serviceable aircraft strengths
Luftwaffe serviceable aircraft strengths (1940–1945)
The following table summarizes the operational strength of the German air force , or Luftwaffe , by general category of aircraft. ...
2 KB (278 words) - 10:37, 17 February 2011
Index of World War II articles (L)
Luftwaffe serviceable aircraft strengths (1940-1945) Luftwaffe Southern (Balkan-Ukraine) detachment (Luftflotte 4, Romania-Hungary) ...
18 KB (2,747 words) - 22:42, 1 April 2011
History of the Luftwaffe (1933–1945)
The German Luftwaffe was one of the strongest, most doctrinally advanced, and most ... Luftwaffe serviceable aircraft strengths (1940-1945) ...
66 KB (9,668 words) - 11:05, 14 June 2011 [...]"
There, the first link opens a table that includes data on number of German aircrafts during WW2. It´s part of english Wiki, not German. And those numbers are completely different to the ones in the German article.