Swiss luxury chocolate producer Lindt & Sprüngli has revealed a 3.5% increase in 2001 sales to SFr1.59bn (US$932m), denying fears that the terrorist attacks of 11 September would hit turnover through lower US duty free demand. Before translation into Swiss francs sales actually rose 6.3%, but the company explained that difference in growth rates was caused by the discrepancy between the Swiss franc against the euro.