5 Years of Ancestor Score with over 5000 ancestors in 2021

Inspired by the Ancestor Score  -  also called "Completeness Statistics"  -  of other blogs and GeneaNet's definition, I generated my first one in February 2016. Since then I haven't just been able to increase my score, because I also had to remove a whole line of wrong ancestors***. I could partially replace them by already existing ancestors - due to inbreeding among my ancestors. That didn't increase the score either. Therefore, I had to remove the 2017 score to be able to continue this series. 
In 2020, I was finally able to add a lot of new medieval and 16th-century ancestors, but I also had to delete some wrong 16th-century people. Luckily, the end result was a growth in ancestors. I was able to add so many ‘new’ (to me) ancestors, as a result of new publications on HoGenDa.nl, and time saving by the staying-at-home in 2020 due to the Covid-19 virus. Therefore, I've decided to publish this year's score on New Year's Day.

Geneanet defines the Ancestor Score as 

“comparing the number of possible ancestors with the number of identified ancestors on a 10-generation report”.

My Ancestor Score at generation 10 in the period 1600-1740 is 79.7%, because some cousins intermarried in the 7th generation.
Tracing a person's lineage back in time forms a binary tree of 2 parents, 4 grandparents, 8 great-grandparents and so on. However, the number of individuals in such an ancestor tree grows exponentially and will eventually become impossibly high. For example, an individual human alive today would - over 30 generations, going back to about the High Middle Ages - have about 1.07 billion ancestors, more than the total world population at that time. 
In reality, an ancestor tree is not a binary tree. Rather, pedigree collapse changes the binary tree to a directed acyclic graph (d.a.g.) with a vertex for each family member and an edge for each parent-child relationship. 

The total number of my “known” ancestors - starting with my parents (generation 2) - is currently just over 5000. The generation with the highest number of ancestors is generation 12 with 811 ancestors, 39½ % of that generation. In the next generation I have found 19½ % of my ancestors, a total of 804 people.
My ancestors mostly originate in the provinces of South Holland and North Brabant (mostly in the part that belonged to Holland before 1800) - with a recent increase in the number of ancestors in the province of Utrecht.

Composition and Bandwidth of various Generations
Generations	Composition								Bandwidth**
	Men	Women	Total	% 2021	% 2020	% 2019	% 2018*	% 2016	From	Until
G 3	2	2	4	100.0	100.0	100.0	100.0	100.0	1892	1906
G 4	4	4	8	100.0	100.0	100.0	100.0	100.0	1850	1880
G 5	8	8	16	100.0	100.0	100.0	100.0	100.0	1804	1857
G 6	16	16	32	100.0	100.0	100.0	100.0	100.0	1756	1832
G 7	30	30	60	93.8	93.8	93.8	93.8	93.8	1724	1802
G 8	59	59	118	92.2	92.2	92.2	92.2	90.6	1680	1777
G 9	114	113	227	88.7	89.1	89.1	88.3	86.7	1645	1750
G 10	207	201	408	79.7	79.7	79.5	78.7	76.4	1600	1740
G 11	335	307	642	62.7	61.8	61.2	60.8	57.0	1560	1700
G 12	437	374	811	39.6	38.4	37.6	37.3	33.8	1510	1695
G 13	460	344	804	19.6	18.7	18.1	17.9	15.7	1505	1670
G 14	394	273	667	8.1	7.3	7.0	7.1	6.1	1440	1625
G 15	282	175	457	2.8	2.3	2.0	2.0	1.6	1440	1580
G 16	157	89	246	0.8	0.6	0.6	0.6	0.5	1395	1540
G 17	91	43	134	0.2	0.2	0.2	0.2	0.1	1365	1500
G 18	56	27	83	0.1	0.1	0.1	0.1	0.0	1335	1500
G 19	42	17	59	0	0	0	0	0	1310	1440
G 20	27	13	40	0	0	0	0	0	1300	1400

     *)  All years feature statistics of the month February except for the years 2018 (August) and 2021 (January)..
   **) The Bandwidth of a generation is determined by the earliest and latest known birth or baptism date within that generation.
  ***) I have many ancestors in places like Sint Anthoniepolder, 's-Gravendeel, Wieldrecht and Hendrik-Ido-Ambacht, where pre-1800 baptism records are missing.

 Further Reading: Geneanet's Ancestor Score Definition, Equivalent Complete Generations, Completeness Index.