Table 6.
Hirschman–Herfindahl index of specialists in Qazvin province by year
| City | Year | ||||||
|---|---|---|---|---|---|---|---|
| 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | |
| Hirschman index | 6233/11 | 6283/93 | 5893/28 | 6762/30 | 6968/12 | 6152/94 | 6466/87 |
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