Year	Percent
1950	10.07969
1955	10.1327
1960	10.1489
1965	10.16076
1970	10.43356
1975	10.80251
1980	11.04905
1985	11.03387
1990	10.88013
1995	10.30839
2000	9.68572
2005	9.27261
2010	8.82743
2015	8.65237
2020	8.27341
2025	8.06729
2030	7.92812
2035	7.53233
2040	7.214
2045	6.9481
2050	6.69542
2055	6.45305
2060	6.23828
2065	6.03092
2070	5.83768
2075	5.67059
2080	5.5333
2085	5.40499
2090	5.29447
2095	5.19765
2100	5.11164