The genesis block to distribute Lisk will not be created until after the ICO ends on March 21.  During this time, more donors will join.  As they join, the fixed 85M Lisk being distributed in this ICO must be further subdivided among them, so the amount of Lisk allocated to you must mathematically decrease.  To compensate for your declining proportion, the money brought in by new donors makes the fewer Lisk you hold more valuable.   However many Lisk you hold will be worth 0.05 BTC at all times, even tho the number of Lisk you will be allocated are almost certainly less than 4477 by now.

The Lisk community has some charts we are watching that shows the current numbers and how they can and will change...

How Many Lisk You Will Receive For One Bitcoin (BTC)

https://docs.google.com/spreadsheets/d/1iOEdaRnBmSAO5miW7xYheeYUgo5wL9l9BONw6x21nQg/edit?usp=sharing

How Many Lisk You Will Receive For One Crypti (XCR)

https://docs.google.com/spreadsheets/d/1GwWKK7bpjYTxtQRIq_l2xiKI9rEOpTU1oTt0q3C6Mc8/edit?usp=sharing

The Satoshi Price For One Lisk

https://docs.google.com/spreadsheets/d/1Q2MJ25_bK5Yi60FYohYCUEkujUtL5c0P1dOdlDMPMBI/edit?usp=sharing