user
Instruction
Answer the question based on the provided table.


Table
Table Title: Film industry
Table Content:
| Rank | Country | Box Office | Year | Box office\nfrom national films |
| --- | --- | --- | --- | --- |
| 1 | Canada/United States | $10.8 billion | 2012 | – |
| 2 | China | $3.6 billion | 2013 | 59% (2013) |
| 3 | Japan | $1.88 billion | 2013 | 61% (2013) |
| 4 | United Kingdom | $1.7 billion | 2012 | 36.1% (2011) |
| 5 | France | $1.7 billion | 2012 | 33.3% (2013) |
| 6 | South Korea | $1.47 billion | 2013 | 59.7% (2013) |
| 7 | India | $1.4 billion | 2012 | – |
| 8 | Germany | $1.3 billion | 2012 | – |
| 9 | Russia | $1.2 billion | 2012 | – |
| 10 | Australia | $1.2 billion | 2012 | 4.1% (2011) |
| 11 | Italy | $0.84 billion | 2013 | 30% (2013) |
| 12 | Brazil | $0.72 billion | 2013 | 17% (2013) |
| - | World | $34.7 billion | 2012 | – |


Question
how many countries had at least $1 billion in box office?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["10"]