Year	Percent
1950	12.00757
1955	11.45898
1960	11.42805
1965	13.24802
1970	13.17238
1975	12.98017
1980	13.36539
1985	12.62979
1990	9.11327
1995	14.23354
2000	14.99903
2005	14.20861
2010	11.70868
2015	9.88907
2020	10.28233
2025	10.16161
2030	9.76468
2035	8.99913
2040	8.33361
2045	7.9738
2050	7.74793
2055	7.449
2060	7.06097
2065	6.69365
2070	6.4213
2075	6.23424
2080	6.08592
2085	5.91655
2090	5.73755
2095	5.57756
2100	5.4546