PDB Statistics: UniProtKB Entries with Known 3D Structure (Annual)
This chart shows the total number of unique UniProtKB entries in PDB structures released within each year.
Note: The number of unique UniProtKB entries in the statistics table is linked to the group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.
| Year | UniProtKB Entries with Known 3D Structure | 
|---|---|
| 1976 | 10 | 
| 1977 | 10 | 
| 1978 | 3 | 
| 1979 | 7 | 
| 1980 | 7 | 
| 1981 | 11 | 
| 1982 | 19 | 
| 1983 | 17 | 
| 1984 | 14 | 
| 1985 | 15 | 
| 1986 | 10 | 
| 1987 | 13 | 
| 1988 | 31 | 
| 1989 | 46 | 
| 1990 | 70 | 
| 1991 | 82 | 
| 1992 | 91 | 
| 1993 | 301 | 
| 1994 | 635 | 
| 1995 | 499 | 
| 1996 | 600 | 
| 1997 | 856 | 
| 1998 | 1,107 | 
| 1999 | 1,371 | 
| 2000 | 1,550 | 
| 2001 | 1,733 | 
| 2002 | 1,850 | 
| 2003 | 2,481 | 
| 2004 | 3,099 | 
| 2005 | 3,374 | 
| 2006 | 3,813 | 
| 2007 | 4,192 | 
| 2008 | 4,295 | 
| 2009 | 4,232 | 
| 2010 | 4,434 | 
| 2011 | 4,252 | 
| 2012 | 4,645 | 
| 2013 | 4,926 | 
| 2014 | 5,967 | 
| 2015 | 5,654 | 
| 2016 | 6,390 | 
| 2017 | 6,797 | 
| 2018 | 6,944 | 
| 2019 | 7,331 | 
| 2020 | 8,784 | 
| 2021 | 8,126 | 
| 2022 | 9,642 | 
| 2023 | 10,039 | 
| 2024 | 10,370 | 
| 2025 | 9,587 | 














