Given the task definition and input, reply with output. This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

Passage: After Flash 5 introduced ActionScript in 2000, developers combined the visual and programming capabilities of Flash to produce interactive experiences and applications for the Web. Such Web-based applications eventually came to be known as "Rich Internet Applications" . In 2004, Macromedia Flex was released, and specifically targeted the application development market. Flex introduced new user interface components, advanced data visualization components, data remoting, and a modern IDE . Flex competed with Asynchronous JavaScript and XML and Microsoft Silverlight during its tenure. Flex was upgraded to support integration with remote data sources, using AMF, BlazeDS, Adobe LiveCycle, Amazon Elastic Compute Cloud, and others. As of 2015, Flex applications can be published for desktop platforms using Adobe AIR. Between 2006 and 2016, the Speedtest.net web service conducted over 9.0 billion speed tests using an RIA built with Adobe Flash. In 2016, the service shifted to HTML5 due to the decreasing availability of Adobe Flash Player on PCs. As of 2016, Web applications and RIAs can be developed with Flash using the ActionScript 3.0 programming language and related tools such as Adobe Flash Builder. Third-party IDEs such as FlashDevelop and Powerflasher FDT also enable developers to create Flash games and applications, and are generally similar to Microsoft Visual Studio. Flex applications are typically built using Flex frameworks such as PureMVC.
For how many years did Speedtest.net use AdobeFlash?