年度 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 |
国产仪器数量占比 | 19% | 21% | 22% | 23% | 25% | 25% | 24% | 22% | 23% |
美国进口仪器数量占比 | 43% | 42% | 41% | 40% | 39% | 38% | 38% | 39% | 38% |