Year	Percent
1950	11.89869
1955	10.36834
1960	11.90421
1965	12.9818
1970	12.96023
1975	13.28787
1980	12.11272
1985	11.41352
1990	11.08739
1995	10.94614
2000	10.62061
2005	10.05147
2010	9.93362
2015	8.51053
2020	7.56936
2025	7.36876
2030	7.34532
2035	7.18035
2040	6.72978
2045	6.15806
2050	5.70849
2055	5.49546
2060	5.47043
2065	5.46742
2070	5.37566
2075	5.2072
2080	5.04281
2085	4.95506
2090	4.95813
2095	4.99428
2100	4.99145