Country | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
USA | 2.63 | 2.65 | 2.56 | 2.56 | 2.50 | 2.52 | 2.56 | 2.63 | 2.77 | 2.81 | 2.74 | 2.77 | 2.68 | 2.71 | 2.72 | 2.79 | 2.85 | 2.91 | 3.01 | 3.18 | 3.45 |
China | 0.89 | 0.94 | 1.06 | 1.12 | 1.21 | 1.31 | 1.37 | 1.37 | 1.45 | 1.66 | 1.71 | 1.78 | 1.91 | 2.00 | 2.02 | 2.06 | 2.10 | 2.12 | 2.14 | 2.23 | 2.40 |
Japan | 2.86 | 2.92 | 2.97 | 2.99 | 2.98 | 3.13 | 3.23 | 3.29 | 3.29 | 3.20 | 3.10 | 3.21 | 3.17 | 3.28 | 3.37 | 3.24 | 3.11 | 3.17 | 3.22 | 3.21 | 3.27 |
Germany | 2.41 | 2.40 | 2.44 | 2.47 | 2.44 | 2.44 | 2.47 | 2.46 | 2.62 | 2.74 | 2.73 | 2.81 | 2.88 | 2.84 | 2.88 | 2.93 | 2.94 | 3.05 | 3.11 | 3.17 | 3.13 |
UK | 1.61 | 1.60 | 1.62 | 1.58 | 1.53 | 1.55 | 1.57 | 1.61 | 1.60 | 1.66 | 1.64 | 1.64 | 1.57 | 1.61 | 1.63 | 1.63 | 1.65 | 1.66 | 1.71 | 1.71 | - |
India | 0.74 | 0.72 | 0.71 | 0.71 | 0.74 | 0.81 | 0.80 | 0.79 | 0.84 | 0.82 | 0.77 | 0.76 | 0.74 | 0.71 | 0.70 | 0.69 | 0.67 | 0.67 | 0.65 | - | - |
France | 2.09 | 2.14 | 2.17 | 2.12 | 2.09 | 2.05 | 2.05 | 2.02 | 2.06 | 2.21 | 2.18 | 2.19 | 2.23 | 2.24 | 2.28 | 2.23 | 2.22 | 2.20 | 2.20 | 2.19 | 2.35 |
Italy | 1.00 | 1.04 | 1.08 | 1.06 | 1.05 | 1.04 | 1.08 | 1.13 | 1.16 | 1.22 | 1.22 | 1.20 | 1.26 | 1.30 | 1.34 | 1.34 | 1.37 | 1.37 | 1.42 | 1.46 | 1.51 |
Canada | 1.86 | 2.02 | 1.97 | 1.97 | 2.00 | 1.97 | 1.94 | 1.90 | 1.86 | 1.92 | 1.83 | 1.79 | 1.77 | 1.71 | 1.71 | 1.69 | 1.73 | 1.69 | 1.74 | 1.75 | 1.84 |
S. Korea | 2.13 | 2.28 | 2.21 | 2.28 | 2.44 | 2.52 | 2.72 | 2.87 | 2.99 | 3.15 | 3.32 | 3.59 | 3.85 | 3.95 | 4.08 | 3.98 | 3.99 | 4.29 | 4.52 | 4.63 | 4.81 |