Year	Percent
1950	12.15528
1955	13.03921
1960	16.01308
1965	15.89157
1970	15.73154
1975	15.65099
1980	16.1856
1985	16.30553
1990	15.95916
1995	14.86291
2000	13.24464
2005	13.33792
2010	12.05164
2015	13.19447
2020	11.50676
2025	9.82692
2030	9.36983
2035	8.77201
2040	8.36341
2045	7.92497
2050	7.33004
2055	6.75069
2060	6.30064
2065	6.00114
2070	5.78916
2075	5.59516
2080	5.39093
2085	5.19221
2090	5.02868
2095	4.92854
2100	4.87491