1. 1748-August 1755
2. August 1755-April 1756
3. April- November 1756
4. November 1756-October 1757
5. October 1757-September 1758
6. September 1758-December 1760
7. January 1761-June 1767
8. June 1767-December 1771
9. January 1772-March 1774
10. March 1774-June 1775.