The population in 2008 is 635,082. This is true given that we follow the 1.93% increase in population every two years. The rate was derived from the increase of 588,292 (year 2000) to 599,656 (year 2002). The computation is:
((599,656 - 588,292) / 588,292) * 100 = 1.93%
Applying the rate every two years, here's what get:
2000: 588,292
2002: 599,656
2004: 611,240
2006: 623,047
2008: 635,082