Complex sentence: Since the 1980s the marketing industry has seen an increase in research as well as increase in spending from the 1992 budget of 6 billion.Where as of 2003 this figure has risen to an estimated $15 billion in marketing efforts.
Split into simpler sentences: Since the 1980s the marketing industry has seen an increase in research as well as an increase in spending from the 1992 budget of $6 billion. As of 2003 this figure has risen to an estimated $15 billion in marketing efforts.