No, it's not Holland. It seems to be Japanese who buy and use the most bicycle.
'Sales figures attest to the growing popularity of bicycles. The number of bicycles sold in Japan increased from 8.2 million in 1991 to 11.3 million in 2001 - almost 40% growth in 10 years. Of all the bicycles made worldwide, 10% are sold in Japan. Imported bicycles are riding the crest of the popularity wave: They had a 63% share (7.1 million bikes) of the sales in 2001, and this share has been growing."