Year	Percent
1950	12.49662
1955	12.5058
1960	14.11979
1965	13.94753
1970	13.64767
1975	13.31852
1980	13.21688
1985	12.77777
1990	12.14808
1995	10.99912
2000	10.03327
2005	9.69747
2010	8.96799
2015	8.45641
2020	8.13355
2025	7.35703
2030	6.91156
2035	6.44934
2040	6.11745
2045	5.83336
2050	5.60839
2055	5.39418
2060	5.19275
2065	5.02323
2070	4.9079
2075	4.82515
2080	4.77495
2085	4.72037
2090	4.66857
2095	4.61894
2100	4.58649