This graph shows the total number of publications written about "Lighting" by people in this website by year, and whether "Lighting" was a major or minor topic of these publications.
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| Year | Major Topic | Minor Topic | Total |
|---|
| 2002 | 1 | 1 | 2 |
| 2009 | 1 | 0 | 1 |
| 2013 | 0 | 1 | 1 |
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