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The U.S. electronics industry estimates that the HDTV market will total about $ 150 billion over the next two decades , with an additional $ 400 billion expected to go for related products .
 U.S., about $ 150 billion, the next two decades, an additional $ 400 billion
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 U.S., about $ 150 billion, the next two decades, an additional $ 400 billion