| 2015 |
206,721,463,875 |
| 2014 |
201,040,404,585 |
| 2013 |
192,701,815,700 |
| 2012 |
190,850,891,575 |
| 2011 |
191,854,954,745 |
| 2010 |
195,755,149,835 |
| 2009 |
196,402,479,890 |
| 2008 |
197,952,047,240 |
| 2007 |
205,421,281,680 |
| 2006 |
203,782,560,890 |
| 2005 |
200,974,307,100 |
| 2004 |
196,185,426,435 |
| 2003 |
185,641,865,615 |
| 2002 |
178,680,704,605 |
| 2001 |
171,029,361,810 |
| 2000 |
149,857,314,525 |
| 1999 |
140,868,232,130 |
| 1998 |
136,680,773,280 |
| 1997 |
133,267,776,905 |
| 1996 |
130,004,000,000 |
| 1995 |
127,809,000,000 |
| 1994 |
121,989,000,000 |
| 1993 |
120,467,000,000 |
| 1992 |
119,868,000,000 |
| 1991 |
113,319,000,000 |
| 1990 |
109,997,000,000 |
|