Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Centre | Country | Rating | Change |
| --- | --- | --- | --- | --- |
| 41.0 | Isle of Man ( CD ) | Isle of Man ( CD ) | 638.0 | 7.0 |
| 42.0 | Abu Dhabi | United Arab Emirates | 637.0 | 12.0 |
| 43.0 | Wellington | New Zealand | 636.0 | 10.0 |
| 44.0 | Istanbul | Turkey | 633.0 | 7.0 |
| 45.0 | Amsterdam | Netherlands | 629.0 | 26.0 |
| 46.0 | Buenos Aires | Argentina | 628.0 | 5.0 |
| 47.0 | Riyadh | Saudi Arabia | 627.0 | 29.0 |
| 48.0 | British Virgin Islands ( BOT ) | British Virgin Islands ( BOT ) | 626.0 | 14.0 |
| 49.0 | Copenhagen | Denmark | 625.0 | 18.0 |
| 50.0 | Taipei | Taiwan | 619.0 | 34.0 |
| 51.0 | Milan | Italy | 618.0 | 34.0 |
| 52.0 | Bahrain | Bahrain | 610.0 | 3.0 |
| 53.0 | Malta | Malta | 608.0 | 13.0 |
| 54.0 | Madrid | Spain | 607.0 | 28.0 |
| 55.0 | Jakarta | Indonesia | 606.0 | 14.0 |
| 56.0 | Dublin | Ireland | 605.0 | 22.0 |
| 57.0 | Helsinki | Finland | 604.0 | 30.0 |
| 58.0 | Bangkok | Thailand | 600.0 | 19.0 |
| 59.0 | Beijing | China | 598.0 | 24.0 |
| 60.0 | Brussels | Belgium | 597.0 | 44.0 |
| 61.0 | Johannesburg | South Africa | 592.0 | 18.0 |
| 62.0 | Edinburgh | United Kingdom | 590.0 | 42.0 |
| 63.0 | Panama City | Panama | 589.0 | 8.0 |
| 64.0 | Manila | Philippines | 587.0 | 1.0 |
| 65.0 | Glasgow | United Kingdom | 586.0 | 50.0 |
| 66.0 | Mexico City | Mexico | 584.0 | 44.0 |
| 67.0 | The Bahamas | The Bahamas | 583.0 | 4.0 |
| 68.0 | Mauritius | Mauritius | 581.0 | 9.0 |
| 69.0 | Moscow | Russia | 580.0 | 26.0 |
| 70.0 | Gibraltar ( BOT ) | Gibraltar ( BOT ) | 572.0 | 43.0 |
| 71.0 | Warsaw | Poland | 571.0 | 37.0 |
| 72.0 | Mumbai | India | 570.0 | 35.0 |
| 73.0 | Prague | Czech Republic | 565.0 | 46.0 |
| 74.0 | Cyprus | Cyprus | 536.0 | 40.0 |
| 75.0 | Lisbon | Portugal | 535.0 | 17.0 |
| 76.0 | Saint Petersburg | Russia | 522.0 | 63.0 |
| 77.0 | Budapest | Hungary | 515.0 | 26.0 |
| 78.0 | Tallinn | Estonia | 495.0 | 94.0 |
| 79.0 | Reykjavik | Iceland | 479.0 | 67.0 |
| 80.0 | Athens | Greece | 469.0 | 4.0 |
Question:
Which Rating has a Centre of helsinki?
Answer:
604.0