the world\'s sixth-largest economy: CA

which is top 5 of "加利福尼亞這個世界第六大經濟體"

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California is often referred to as the world's sixth-largest economy due to its substantial GDP. Here are the top five economies in the world based on GDP, as of the most recent data:

1. United States
2. China
3. Japan
4. Germany
5. India

California, as a state, would rank just behind these countries if it were considered a separate economy, often placing it in the sixth position globally. 

California counts what percentage of the USA economy?

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As of recent estimates, California's economy represents about 15% of the total GDP of the United States. This percentage can vary slightly depending on the source and the specific year of the data. California's large and diverse economy makes it a significant contributor to the overall economic output of the country.