Business analysts from around the world state that Kenya's economy rose last year and that will be sustained this year. 2008/9 was marred by violence and the economy hit rock bottom. It is projected that a decline will reoccur prior to 2011/12 elections if the 2008 violence happens again.
The recent heavy rains have boosted the agriculture economy so this year looks healthy. Kenya is 146th out of 180 most corrupt countries in the world. {Transparency International Index 2009]
So to answer your question 2010 will be a defining year in the future of the economy and whether the rest of the world will re-invest in Kenya.