Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Parivrajaka dynasty
Table title:
Inscriptions
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Find spot </th><th colspan=1 rowspan=1 > Issued by </th><th colspan=1 rowspan=1 > Year (CE year, assuming Gupta era) </th><th colspan=1 rowspan=1 > Objective </th><th colspan=1 rowspan=1 > Source </th></tr>
<tr> <td colspan=1 rowspan=1 > Khoh </td><td class="highlighted"  colspan=1 rowspan=1 > Maharaja Hastin </td><td class="highlighted"  colspan=1 rowspan=1 > 156 (475 CE) </td><td colspan=1 rowspan=1 > Grant of the Vasuntarashaika village by Maharaja Hastin to Gopasvamin and other Brahmins </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Khoh </td><td class="highlighted"  colspan=1 rowspan=1 > Maharaja Hastin </td><td class="highlighted"  colspan=1 rowspan=1 > 163 (482 CE) </td><td colspan=1 rowspan=1 > Grant of the Korparika agrahara by Maharaja Hastin to Brahmins </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Jabalpur </td><td class="highlighted"  colspan=1 rowspan=1 > Maharaja Hastin </td><td class="highlighted"  colspan=1 rowspan=1 > 163 (482 CE) </td><td colspan=1 rowspan=1 > Grant of a village by Maharaja Hastin to Brahmins, in Gupta year 170 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Majhgawan </td><td class="highlighted"  colspan=1 rowspan=1 > Maharaja Hastin </td><td class="highlighted"  colspan=1 rowspan=1 > 191 (510 CE) </td><td colspan=1 rowspan=1 > Grant by Maharaja Hastin at the request of Mahadevi-deva </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Navagrama </td><td class="highlighted"  colspan=1 rowspan=1 > Maharaja Hastin and Uchchhakalpa Maharaja Sharvanatha </td><td class="highlighted"  colspan=1 rowspan=1 > 198 (517 CE) </td><td colspan=1 rowspan=1 > Grant of a village by Maharaja Hastin to Brahmins of Parashara gotra and Madhyandina Shakha </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Bhumara (or Bhummra) </td><td colspan=1 rowspan=1 > Maharaja Hastin </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > D. C. </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Betul </td><td colspan=1 rowspan=1 > Maharaja Sakshobha (Samkshobha) </td><td colspan=1 rowspan=1 > 199 (518 CE) </td><td colspan=1 rowspan=1 > Grant of the Prastaravataka village and Dvāravāika quarter in Tripuri province, by Maharaja Hastin to Bhanusvamin (a Brahmin of Bharadvaja gotra) </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Khoh </td><td colspan=1 rowspan=1 > Maharaja Samkshobha </td><td colspan=1 rowspan=1 > 209 (528 CE) </td><td colspan=1 rowspan=1 > Grant of the Opani village by Maharaja Hastin to a temple of goddess Pishapuri, at the request of Chhodugomin. Pishapuri was probably a local form of Lakshmi. </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
How long did Maharaja Hastin rule?
Answer:
Hastin ruled for at least 42 years, as his earliest extant inscription is dated to the year 156 and his last inscription is dated to the year 198.