| Value | Category | 
                                    
                    
                        | 1900-01-01 |  | 
                                    
                    
                        | 1933-03-21 |  | 
                                    
                    
                        | 1952-05-19 |  | 
                                    
                    
                        | 1969-07-15 |  | 
                                    
                    
                        | 1971-02-19 |  | 
                                    
                    
                        | 1980-05-01 |  | 
                                    
                    
                        | 1983-10-28 |  | 
                                    
                    
                        | 1987-10-14 |  | 
                                    
                    
                        | 1988-01-16 |  | 
                                    
                    
                        | 1988-05-16 |  | 
                                    
                    
                        | 1990-10-01 |  | 
                                    
                    
                        | 1992-05-01 |  | 
                                    
                    
                        | 1992-09-24 |  | 
                                    
                    
                        | 1992-10-31 |  | 
                                    
                    
                        | 1994-07-16 |  | 
                                    
                    
                        | 1994-09-26 |  | 
                                    
                    
                        | 1995-01-16 |  | 
                                    
                    
                        | 1996-04-25 |  | 
                                    
                    
                        | 1996-07-13 |  | 
                                    
                    
                        | 1996-10-24 |  | 
                                    
                    
                        | 1997-07-20 |  | 
                                    
                    
                        | 1999-01-12 |  | 
                                    
                    
                        | 1999-07-04 |  | 
                                    
                    
                        | 2000-02-23 |  | 
                                    
                    
                        | 2000-09-06 |  | 
                                    
                    
                        | 2001-02-05 |  | 
                                    
                    
                        | 2003-08-26 |  | 
                                    
                    
                        | 2003-10-11 |  | 
                                    
                    
                        | 2004-10-27 |  | 
                                    
                    
                        | 2006-08-30 |  | 
                                    
                    
                        | 2007-11-22 |  | 
                                    
                    
                        | 2008-01-17 |  | 
                                    
                    
                        | 2008-01-18 |  | 
                                    
                    
                        | 2008-03-29 |  | 
                                    
                    
                        | 2009-07-10 |  | 
                                    
                    
                        | 2009-08-09 |  | 
                                    
                    
                        | 2009-12-27 |  | 
                                    
                    
                        | 2010-05-31 |  | 
                                    
                    
                        | 2010-07-10 |  | 
                                    
                    
                        | 2011-04-29 |  | 
                                    
                    
                        | 2012-03-18 |  | 
                                    
                    
                        | 2012-12-01 |  | 
                                    
                    
                        | 2013-03-01 |  | 
                                    
                    
                        | 2013-03-31 |  | 
                                    
                    
                        | 2013-04-29 |  | 
                                    
                    
                        | 2013-08-10 |  | 
                                    
                    
                        | 2013-09-29 |  | 
                                    
                    
                        | 2013-11-29 |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.