Final answer:
The information provided does not mention the FFA or state degree eligibility criteria. For an accurate answer, one would need to reference the FFA organization's regulations or Pennsylvania-specific FFA documentation.
Step-by-step explanation:
The question regarding the percentage of FFA members in Pennsylvania eligible for the state degree each year appears to be a specific detail that could be found in the rules and bylaws of the FFA organization or the Pennsylvania FFA association. However, such specific eligibility criteria are not mentioned in the historic details provided about Pennsylvania's constitution or governance. Therefore, to answer this question accurately, one would need to refer to current FFA documentation or Pennsylvania state-specific FFA regulations. The information given revolves around Pennsylvania's constitutional history during the Revolutionary Era, changes made to religious qualifications for legislators in 1790, and aspects of representation and democratic tendencies in Pennsylvania's early government structures. None of these details provide information about the FFA or state degree eligibility.