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 | Company | Headquarters | Industry | Sales (billion $) | Profits (billion $) | Assets (billion $) | Market Value (billion $) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Citigroup | USA | Banking | 146.56 | 21.54 | 1,884.32 | 247.42 |
| 2.0 | Bank of America | USA | Banking | 116.57 | 21.13 | 1,459.74 | 226.61 |
| 3.0 | HSBC | UK | Banking | 121.51 | 16.63 | 1,860.76 | 202.29 |
| 4.0 | General Electric | USA | Conglomerate | 163.39 | 20.83 | 697.24 | 358.98 |
| 5.0 | JPMorgan Chase | USA | Banking | 99.30 | 14.44 | 1,351.52 | 170.97 |
| 6.0 | American International Group | USA | Insurance | 113.19 | 14.01 | 979.41 | 174.47 |
| 7.0 | ExxonMobil | USA | Oil and gas | 335.09 | 39.50 | 223.95 | 410.65 |
| 8.0 | Royal Dutch Shell | Netherlands | Oil and gas | 318.85 | 25.44 | 232.31 | 208.25 |
| 9.0 | UBS | Switzerland | Diversified Financials | 105.59 | 9.78 | 1,776.89 | 116.84 |
| 10.0 | ING Group | Netherlands | Diversified Financials | 153.44 | 9.65 | 1,615.05 | 93.99 |
| 11.0 | BP | UK | Oil and gas | 265.91 | 22.29 | 217.60 | 198.14 |
| 12.0 | Toyota | Japan | Automotive | 179.02 | 11.68 | 243.60 | 217.69 |
| 13.0 | The Royal Bank of Scotland | UK | Banking | 77.41 | 12.51 | 1,705.35 | 124.13 |
| 14.0 | BNP Paribas | France | Banking | 89.16 | 9.64 | 1,898.19 | 97.03 |
| 15.0 | Allianz | Germany | Insurance | 125.33 | 8.81 | 1,380.88 | 87.22 |
| 16.0 | Berkshire Hathaway | USA | Diversified Financials | 98.54 | 11.02 | 248.44 | 163.79 |
| 17.0 | Walmart | USA | Retailing | 348.65 | 11.29 | 151.19 | 201.36 |
| 18.0 | Barclays | UK | Banking | 67.71 | 8.95 | 1,949.17 | 94.79 |
| 19.0 | Chevron | USA | Oil and gas | 195.34 | 17.14 | 132.63 | 149.37 |
Question:
What is the lowest rank of a company with 248.44 billions of dollars in assets?
Answer:
16.0