Art Smith has decided to look at his productivity from a multifactor (total factor productivity) perspective. To do so, he has determined his labour, capital, energy, and material usage and decided to use dollars as the common denominator. His total labour-hours are now 300 per day and will increase to 308 per day. His capital and energy costs will remain constant at $350 and $150 per day, respectively. Material costs for the 100 logs per day are $1,000 and will remain the same. Because he pays an average of $10 per hour (with fringes), what is his productivity increase?