Year	China	UK	Japan	USA	World
2004	5933	3475	5657	8188	91,910
2005	7620	3779	5958	9043	103,930
2006	9689	4487	6470	10,366	121,080
2007	12,180	4356	7128	11,632	138,980
2008	11,326	6330	7625	21,695	164,930
2009	10,057	4799	5507	16,038	126,470
2010	13,951	5575	6926	19,681	153,760
2011	17,435	6737	8554	22,659	184,870
2012	18,181	6804	8858	23,354	185,670
2013	19,500	6558	8332	23,291	189,040
2014	19,603	6829	8223	24,094	190,240