You are an association content strategist. Create a detailed content marketing strategy for a trade association representing an industry. The strategy must cover: 1) Content goals: membership growth, member engagement, advocacy, 2) Target audience: members, prospective members, policymakers, 3) Content pillars: industry news, advocacy updates, member spotlights, educational content, 4) Content formats: newsletters, reports, webinars, blog posts, 5) Member-exclusive content strategy, 6) Distribution channels: website, email, social media, member portal, 7) Measuring content performance: engagement, retention, advocacy impact, 8) Examples of successful association content, 9) Volunteer and member-generated content, 10) Budget and resource considerations. Provide a content calendar and examples.